Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments 74FCT162646ATPVCT

Name: 74FCT162646ATPVCT
Brand: Texas Instruments
SKU: 74FCT162646ATPVCT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74FCT162646ATPVCT

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-BSSOP (0.295", 7.50mm Width)

Datasheet:: 74FCT162646ATPVCT.pdf

Description:: IC TXRX NON-INVERT 5.5V 56SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,962

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

74FCT162646ATPVCT from Texas Instruments is a 16-bit registered transceiver with balanced 24 mA output drivers, three-state bus interface capability, and I_off partial-power-down support. It operates at 5V ±10%, features typical ground bounce <0.6 V, and delivers 6.3 ns max propagation delay (bus-to-bus) for high-speed data multiplexing in backplane and transmission-line applications.

For engineers reviewing the 74FCT162646ATPVCT datasheet, 74FCT162646ATPVCT pinout, 74FCT162646ATPVCT application, or 74FCT162646ATPVCT equivalent, this device serves as a low-noise, register-controlled bidirectional data path for industrial bus systems requiring precise timing control, isolation mode storage, and robust ESD protection (>2000 V).

Technical Context

The 74FCT162646ATPVCT implements dual 16-bit D-type registers with independent clock inputs (CLKAB/CLKBA), direction (DIR), output enable (OE), and source-select (SAB/SBA) controls to manage real-time or stored data flow between A and B buses. Its edge-rate control circuitry suppresses system switching noise while maintaining sub-250 ps output skew.

It supports true isolation mode (OE HIGH) where A and B data can be independently latched into opposite registers without bus contention, and uses current-limiting resistors in 24 mA balanced drivers to minimize undershoot and eliminate need for external termination on transmission lines.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC	5 V ±10% - compatible with standard TTL/CMOS logic rails and industrial power supplies
Propagation Delay (Bus-to-Bus)	6.3 ns max - enables reliable 159 MHz data throughput in synchronous bus architectures
Output Drive	±24 mA balanced - reduces ground bounce (<0.6 V) and eliminates external termination resistors
I_off Support	Yes - prevents backflow current during partial power-down, critical for hot-swap and mixed-voltage systems
Operating Temperature	−40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure
ESD Rating	>2000 V HBM - ensures robust handling during PCB assembly and field service
Package	56-pin SSOP (DL), 300-mil width - surface-mount compatible with standard reflow profiles and IPC-7351 land patterns

Pinout & Package

74FCT162646ATPVCT is housed in a 56-pin Shrink Small Outline Package (SSOP), DL package drawing, 300-mil body width, 0.025-inch pitch, JEDEC MO-118 compliant, with moisture sensitivity level (MSL) 1 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A8, 2A1–2A8	A-bus data inputs / outputs	Register A side I/O pins; direction determined by DIR and OE states
1B1–1B8, 2B1–2B8	B-bus data inputs / outputs	Register B side I/O pins; support bidirectional transparent or registered transfer
1CLKAB, 2CLKAB	Register A clock input (A→B)	Loads A-bus data into B-register on LOW-to-HIGH transition
1CLKBA, 2CLKBA	Register B clock input (B→A)	Loads B-bus data into A-register on LOW-to-HIGH transition
1DIR, 2DIR	Direction control	Determines bus destination when OE is active LOW (L = B→A, H = A→B)
1OE, 2OE	Output enable (active LOW)	Enables/disables all A/B outputs; HIGH forces high-impedance isolation mode
1SAB, 2SAB	Source select A→B	Selects real-time or stored A-data for output to B-bus
1SBA, 2SBA	Source select B→A	Selects real-time or stored B-data for output to A-bus
V_CC, GND	Power supply terminals	Eight V_CC and eight GND pins distributed across package for low-inductance decoupling

Key Features

Feature	Design Value
Balanced 24 mA output drivers	Reduces ground bounce to <0.6 V and eliminates need for external series termination on transmission lines
I_off partial-power-down protection	Disables outputs and blocks reverse current when V_CC = 0 V, enabling safe hot-swap in multi-rail systems
Edge-rate controlled outputs	Minimizes simultaneous switching noise (SSN) and improves signal integrity in dense PCB layouts
Isolation mode with independent register storage	Allows A and B data to be latched simultaneously while both buses remain high-Z - essential for glitch-free bus arbitration
Typical output skew <250 ps	Ensures deterministic timing across all 16 bits, critical for synchronous parallel interfaces and memory-mapped peripherals

Applications

Industrial Backplane Interface	Telecom Line Card Data Multiplexing
Use Scenario: Bidirectional data routing between processor and peripheral modules across a 16-bit parallel backplane with strict noise and timing requirements. IC Role / Device Role / Timing Role: Registered transceiver providing clock-synchronized, isolated data transfer between A and B buses with programmable source selection. Use Value: 6.3 ns propagation delay and <250 ps skew ensure setup/hold compliance across 159 MHz backplane clocks; I_off enables safe module insertion/removal.	Use Scenario: Real-time and buffered data exchange between DSP and FPGA on a line card, where transmission-line impedance matching is required. IC Role / Device Role / Timing Role: Transmission-line driver with integrated current-limiting and edge-rate control to drive 50 Ω traces without external resistors. Use Value: ±24 mA balanced drivers reduce ground bounce to <0.6 V and suppress undershoot, eliminating signal integrity issues on long PCB traces.
Factory Automation I/O Hub	Test Equipment Digital Pattern Generator
Use Scenario: Centralized I/O expansion unit connecting PLC CPU to multiple sensor/actuator banks via parallel buses operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade bus interface with isolation mode to store sensor readings while servicing actuator commands without bus contention. Use Value: −40°C to +85°C rating and >2000 V HBM ESD withstand ensure reliability in electrically noisy factory environments with frequent cable disconnects.	Use Scenario: High-fidelity digital stimulus generation for IC functional testing, requiring precise timing, low skew, and glitch-free state transitions. IC Role / Device Role / Timing Role: Registered pattern buffer that captures test vectors on clock edges and outputs them synchronously to DUT pins. Use Value: Dual-clock architecture (CLKAB/CLKBA) allows independent capture and playback timing; SAB/SBA controls enable dynamic vector sourcing from registers or real-time inputs.

Industrial Backplane Interface

Telecom Line Card Data Multiplexing

Use Scenario: Bidirectional data routing between processor and peripheral modules across a 16-bit parallel backplane with strict noise and timing requirements.

IC Role / Device Role / Timing Role: Registered transceiver providing clock-synchronized, isolated data transfer between A and B buses with programmable source selection.

Use Value: 6.3 ns propagation delay and <250 ps skew ensure setup/hold compliance across 159 MHz backplane clocks; I_off enables safe module insertion/removal.

Use Scenario: Real-time and buffered data exchange between DSP and FPGA on a line card, where transmission-line impedance matching is required.

IC Role / Device Role / Timing Role: Transmission-line driver with integrated current-limiting and edge-rate control to drive 50 Ω traces without external resistors.

Use Value: ±24 mA balanced drivers reduce ground bounce to <0.6 V and suppress undershoot, eliminating signal integrity issues on long PCB traces.

Factory Automation I/O Hub

Test Equipment Digital Pattern Generator

Use Scenario: Centralized I/O expansion unit connecting PLC CPU to multiple sensor/actuator banks via parallel buses operating at −40°C to +85°C.

IC Role / Device Role / Timing Role: Industrial-grade bus interface with isolation mode to store sensor readings while servicing actuator commands without bus contention.

Use Value: −40°C to +85°C rating and >2000 V HBM ESD withstand ensure reliability in electrically noisy factory environments with frequent cable disconnects.

Use Scenario: High-fidelity digital stimulus generation for IC functional testing, requiring precise timing, low skew, and glitch-free state transitions.

IC Role / Device Role / Timing Role: Registered pattern buffer that captures test vectors on clock edges and outputs them synchronously to DUT pins.

Use Value: Dual-clock architecture (CLKAB/CLKBA) allows independent capture and playback timing; SAB/SBA controls enable dynamic vector sourcing from registers or real-time inputs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar registered transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY74FCT162646CTPVCT	Slower 5.4 ns max propagation delay; identical pinout, package, and drive strength	Better suited for cost-sensitive designs where timing margin exceeds 6.3 ns requirement	Select when lower speed grade suffices and tighter timing budget is not needed
74FCT162646ATPACT	TSSOP-56 (DGG) package, 240-mil width; same electrical specs and timing	Preferred for space-constrained PCBs requiring smaller footprint and higher pin density	Choose for compact layouts where SSOP width exceeds board area constraints

Compared with 74FCT162646ATPVCT, CY74FCT162646CTPVCT offers relaxed timing at identical drive and package, while 74FCT162646ATPACT provides identical performance in a 25% smaller TSSOP footprint - enabling trade-offs between timing margin, board area, and thermal profile.

Availability

74FCT162646ATPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, telecom line card data multiplexing, and factory automation I/O hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74FCT162646ATPVCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability interface and timing products.

The FCT logic family, including 74FCT162646ATPVCT, was engineered for industrial and telecom systems demanding low-noise, register-controlled bus interfacing with robust power-down behavior and precise timing control.

FAQ

What is the maximum clock frequency supported by the 74FCT162646ATPVCT?

The 74FCT162646ATPVCT does not specify a maximum clock frequency directly, but its 6.3 ns max propagation delay (bus-to-bus) and 5.0 ns minimum clock pulse width imply reliable operation up to approximately 159 MHz in synchronous bus architectures. Timing margins must account for setup/hold requirements (t_SU = 2.0 ns, t_H = 1.5 ns) and board-level signal integrity. The 74FCT162646ATPVCT is optimized for deterministic, low-skew data transfer rather than raw clock rate.

Does the 74FCT162646ATPVCT support hot-swap or partial power-down operation?

Yes, the 74FCT162646ATPVCT includes I_off circuitry that disables outputs and blocks reverse current when V_CC = 0 V, enabling safe hot-swap in multi-rail systems. This feature is explicitly verified in the datasheet under "partial-power-down applications" and ensures no damaging current flows through the device during power sequencing. The 74FCT162646ATPVCT maintains this behavior across its full −40°C to +85°C operating range.

How does the 74FCT162646ATPVCT differ from the CY74FCT16646T series?

The 74FCT162646ATPVCT uses balanced 24 mA output drivers with current-limiting resistors to reduce ground bounce (<0.6 V) and eliminate external termination, whereas CY74FCT16646T offers higher 64 mA sink/32 mA source drive for heavy capacitive loads. The 74FCT162646ATPVCT targets transmission-line driving; CY74FCT16646T targets backplane and low-impedance bus driving. Both share identical pinout and control logic, but drive strength and noise characteristics differ fundamentally.

What package type and dimensions does the 74FCT162646ATPVCT use?

The 74FCT162646ATPVCT uses a 56-pin Shrink Small Outline Package (SSOP), package drawing DL, with 300-mil body width, 0.025-inch lead pitch, and JEDEC MO-118 compliance. Its mechanical dimensions are 18.54 mm × 7.50 mm × 2.40 mm (L × W × H), MSL Level-1 rated for unlimited floor life at ≤30°C/60% RH. The 74FCT162646ATPVCT is RoHS-compliant with green (Pb-free, no Sb/Br) finish and Cu-Ni-Pd-Au lead finish.

Can the 74FCT162646ATPVCT operate at 3.3 V?

No, the 74FCT162646ATPVCT is specified only for V_CC = 5 V ±10% (4.5 V to 5.5 V). Its input thresholds (V_IL = 0.8 V, V_IH = 2.0 V), output drive characteristics, and internal logic levels are designed exclusively for 5 V TTL/CMOS compatibility. Operation below 4.5 V may result in undefined logic states, reduced noise margin, or failure to meet timing specifications. The 74FCT162646ATPVCT is not 3.3 V tolerant and requires level-shifting if interfaced with 3.3 V systems.

74FCT162646ATPVCT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74FCT

Package/Case:: 56-BSSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Transceiver, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-SSOP

74FCT162646ATPVCT FAQ

1.How can I place an order for 74FCT162646ATPVCT through Aetrix?

Please submit a Request for Quotation (RFQ) for 74FCT162646ATPVCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74FCT162646ATPVCT reliable?

The price and inventory of 74FCT162646ATPVCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162646ATPVCT is usually 5 days.

3.What payment methods are accepted for 74FCT162646ATPVCT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162646ATPVCT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74FCT162646ATPVCT?

74FCT162646ATPVCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74FCT162646ATPVCT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74FCT162646ATPVCT?

For technical support, including 74FCT162646ATPVCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162646ATPVCT requirements.

6.How does Aetrix verify that 74FCT162646ATPVCT is sourced from the original manufacturer or authorized distributors?

All 74FCT162646ATPVCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74FCT162646ATPVCT meets industry standards.

7.What is the process for return or replacement of 74FCT162646ATPVCT?

All 74FCT162646ATPVCT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162646ATPVCT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74FCT162646ATPVCT part is unused and in its original packaging.

Return procedure for 74FCT162646ATPVCT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…