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 SN74LVCH16652ADL

Name: SN74LVCH16652ADL
Brand: Texas Instruments
SKU: SN74LVCH16652ADL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74LVCH16652ADL

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: SN74LVCH16652ADL.pdf

Description:: IC TXRX NON-INVERT 3.6V 56SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:166

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

Product details

Overview

SN74LVCH16652ADL from Texas Instruments is a 16-bit bus transceiver and register with 3-state outputs, designed for bidirectional data flow between A- and B-bus domains in mixed-voltage systems. It operates from 1.65 V to 3.6 V, accepts 5.5 V-tolerant inputs, delivers ≤6.3 ns propagation delay at 3.3 V, and supports real-time or registered data transfer via dual clock (CLKAB/CLKBA) and select (SAB/SBA) controls - used in server memory interfaces and high-speed PC chipset interconnects.

For engineers reviewing the SN74LVCH16652ADL datasheet, SN74LVCH16652ADL pinout, SN74LVCH16652ADL application, or SN74LVCH16652ADL equivalent, key selection criteria include its dual 8-bit channel architecture, I_off partial-power-down support, bus-hold on all data I/Os, and compatibility with 3.3-V/5-V mixed-signal environments without external biasing.

Technical Context

The SN74LVCH16652ADL integrates two independent 8-bit transceiver channels (1A/1B and 2A/2B), each with dedicated clock, select, and output-enable controls. Its D-type flip-flop registers allow synchronous latching of data from either bus side, while the SAB/SBA inputs determine whether real-time or stored data propagates - eliminating multiplexer glitches during mode transitions.

It implements true 3-state output control with active-high OEAB and active-low OEBA pins per channel, enabling flexible bus arbitration. The device supports I_off protection (≤±10 µA leakage at V_CC = 0 V) and bus-hold circuitry (±45 µA hold current at 2.3 V) on all 32 data I/Os, removing need for external pull resistors in floating-input scenarios.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - enables direct interface with 1.8-V, 2.5-V, and 3.3-V logic domains without level shifters.
Input Voltage Tolerance	Up to 5.5 V - allows safe connection to 5-V legacy peripherals or microcontrollers in mixed-voltage systems.
t_pd (Max)	6.3 ns at V_CC = 3.3 V - supports reliable 100+ MHz bus operation with deterministic timing margins.
I_OL/I_OH	±24 mA at V_CC = 3.0 V - drives heavy capacitive loads or multiple downstream inputs without signal degradation.
Bus-Hold Current	±45 µA at V_CC = 2.3 V - actively maintains valid logic states on unused A/B port pins, eliminating external pull-up/down resistors.
I_off Leakage	≤±10 µA at V_CC = 0 V - prevents back-driving and power rail contention during partial power-down or hot-insertion sequences.
ESD Rating	2000-V HBM - meets industrial-grade robustness requirements for handling and board assembly.

Pinout & Package

SN74LVCH16652ADL uses a 56-pin SSOP package (18.40 mm × 7.50 mm body size) with standard 0.65-mm lead pitch. Pin numbering follows TI's top-view convention with GND and V_CC distributed across multiple locations for low-impedance power delivery and noise reduction.

Pin/Terminal	Circuit Role	Design Meaning
1, 28, 29, 56	OEAB / OEBA	Active-high (OEAB) and active-low (OEBA) output enables per A→B and B→A directions - enables independent 3-state control of each transceiver path.
2, 27, 55, 30	CLKAB / CLKBA	Low-to-high clock edges latch data from A or B ports into internal D flip-flops - supports synchronous bus capture independent of select or enable state.
3, 26, 54, 31	SAB / SBA	Select inputs determining real-time (low) vs. registered (high) data routing - eliminates glitch during mode switching via internal hazard-free logic.
5–14, 15–24, 33–42, 43–52	A1–A8 / B1–B8	32 bidirectional data I/Os with bus-hold - each pin functions as input or output depending on direction control, retaining last valid state when floating.
4, 11, 18, 25, 32, 39, 46, 53	GND	Eight ground connections - minimize ground bounce and improve signal integrity in high-speed 16-bit parallel interfaces.
7, 22, 35, 50	V_CC	Four power supply pins - reduce IR drop and decoupling impedance across wide die area for stable 3.3-V operation.

Key Features

Feature	Design Value
Mixed-mode signal operation	5.5-V-tolerant inputs at 1.65–3.6-V V_CC - enables direct interfacing between 3.3-V FPGAs and 5-V legacy peripherals without external translators.
Dual 8-bit register + transceiver architecture	Independent CLKAB/CLKBA and SAB/SBA per channel - allows simultaneous latching and forwarding of data across two isolated bus segments.
I_off partial-power-down support	≤±10 µA leakage when V_CC = 0 V - prevents current backflow and ensures safe operation during power sequencing or hot-swap events.
Integrated bus-hold on all 32 I/Os	Eliminates need for 32 external pull resistors - reduces BOM count, PCB area, and layout complexity in memory expansion or I/O expander designs.
Output ground bounce & undershoot control	V_OLP < 0.8 V and V_OHV > 2 V at V_CC = 3.3 V - suppresses switching noise that could corrupt adjacent signals in dense 16-bit buses.

Applications

Server Memory Interconnect	PC Chipset Expansion Bus
Use Scenario: Bidirectional data routing between DDR memory controller and DIMM slots with intermediate latching for timing margining. IC Role / Device Role / Timing Role: 16-bit registered transceiver providing clocked data capture and 3-state isolation between controller and module address/data lines. Use Value: Enables precise setup/hold timing control via CLKAB/CLKBA, reducing timing closure effort in high-frequency memory subsystems.	Use Scenario: Extending LPC or SMBus signals from southbridge to add-on cards while maintaining signal integrity across long traces. IC Role / Device Role / Timing Role: Level-shifting transceiver with bus-hold, translating 3.3-V chipset logic to 5-V peripheral voltage domains. Use Value: 5.5-V input tolerance and I_off support allow safe hot-plug operation without disrupting host power rails.
Network Switch Backplane Interface	Industrial I/O Expander
Use Scenario: Isolating and buffering control/status signals between switch ASIC and management MCU across separate voltage domains. IC Role / Device Role / Timing Role: Dual-channel transceiver with independent OEAB/OEBA enabling dynamic bus arbitration and fault containment. Use Value: Active bus-hold prevents floating inputs during firmware reset sequences, avoiding spurious command execution.	Use Scenario: Adding 16-bit parallel GPIO to microcontroller-based PLC modules where space and BOM cost are constrained. IC Role / Device Role / Timing Role: Registered I/O expander with 3-state outputs, allowing shared bus access among multiple sensor/actuator controllers. Use Value: ±24 mA drive strength supports direct LED/driver interfacing without buffer ICs, reducing layer count and component count.

Server Memory Interconnect

PC Chipset Expansion Bus

Use Scenario: Bidirectional data routing between DDR memory controller and DIMM slots with intermediate latching for timing margining.

IC Role / Device Role / Timing Role: 16-bit registered transceiver providing clocked data capture and 3-state isolation between controller and module address/data lines.

Use Value: Enables precise setup/hold timing control via CLKAB/CLKBA, reducing timing closure effort in high-frequency memory subsystems.

Use Scenario: Extending LPC or SMBus signals from southbridge to add-on cards while maintaining signal integrity across long traces.

IC Role / Device Role / Timing Role: Level-shifting transceiver with bus-hold, translating 3.3-V chipset logic to 5-V peripheral voltage domains.

Use Value: 5.5-V input tolerance and I_off support allow safe hot-plug operation without disrupting host power rails.

Network Switch Backplane Interface

Industrial I/O Expander

Use Scenario: Isolating and buffering control/status signals between switch ASIC and management MCU across separate voltage domains.

IC Role / Device Role / Timing Role: Dual-channel transceiver with independent OEAB/OEBA enabling dynamic bus arbitration and fault containment.

Use Value: Active bus-hold prevents floating inputs during firmware reset sequences, avoiding spurious command execution.

Use Scenario: Adding 16-bit parallel GPIO to microcontroller-based PLC modules where space and BOM cost are constrained.

IC Role / Device Role / Timing Role: Registered I/O expander with 3-state outputs, allowing shared bus access among multiple sensor/actuator controllers.

Use Value: ±24 mA drive strength supports direct LED/driver interfacing without buffer ICs, reducing layer count and component count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16652DGGR	Lacks bus-hold and I_off; max V_CC = 3.6 V but no 5.5-V input tolerance.	Requires external pull resistors; unsuitable for hot-swap or floating-bus scenarios.	Lower-cost option only if system guarantees driven inputs and fixed 3.3-V-only operation.
74ALVC16652MTD	Higher speed (t_pd ≤ 4.2 ns), but narrower V_CC range (2.3–3.6 V); no 5.5-V input tolerance.	Cannot interface with 5-V peripherals; limited to 2.5/3.3-V-only systems.	Preferred for ultra-low-latency applications where voltage domain is strictly controlled and bus-hold is unnecessary.

Compared with SN74LVC16652DGGR and 74ALVC16652MTD, the SN74LVCH16652ADL uniquely combines 5.5-V input tolerance, integrated bus-hold, and I_off in a single 16-bit transceiver - making it the only choice for mixed-voltage, hot-pluggable, or floating-input industrial and computing interfaces.

Availability

SN74LVCH16652ADL is available at Aetrix Electronics and suitable for server memory interconnects, PC chipset expansion buses, network switch backplanes, and industrial I/O expanders requiring stable component supply across extended temperature ranges (–40°C to 125°C).

Supply support for SN74LVCH16652ADL 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 ICs.

The SN74LVCH16652ADL belongs to TI's Widebus™ family of advanced CMOS transceivers, engineered specifically for high-speed, mixed-voltage bus management in servers, computing platforms, and industrial control systems.

FAQ

What is the maximum clock frequency supported by SN74LVCH16652ADL?

The SN74LVCH16652ADL supports up to 150 MHz clock frequency across its full operating temperature range (–40°C to 125°C) at V_CC = 2.7 V to 3.3 V. At 1.8 V, maximum frequency is 120 MHz. These values are specified in the timing requirements tables and validated under load conditions defined in the TI datasheet SCAS319J.

Does SN74LVCH16652ADL require external pull-up or pull-down resistors on data lines?

No. SN74LVCH16652ADL includes active bus-hold circuitry on all 32 A- and B-port I/Os, which maintains valid logic levels on floating inputs without external resistors. Using external pull components with bus-hold enabled is not recommended and may cause excessive current draw or logic instability.

Can SN74LVCH16652ADL interface between 3.3-V and 5-V logic domains?

Yes. SN74LVCH16652ADL accepts input voltages up to 5.5 V regardless of V_CC (1.65–3.6 V), enabling direct connection to 5-V peripherals while driving 3.3-V receivers. Its outputs swing rail-to-rail within the V_CC range, so level translation occurs inherently on the input side only.

How does the I_off feature function in SN74LVCH16652ADL?

The I_off feature in SN74LVCH16652ADL disables internal conduction paths when V_CC = 0 V, limiting leakage current to ≤±10 µA per I/O. This prevents back-powering of the supply rail and protects downstream circuitry during partial power-down, hot-swap, or system initialization sequences.

What is the purpose of the SAB and SBA pins on SN74LVCH16652ADL?

The SAB (Select A-to-B) and SBA (Select B-to-A) pins determine whether real-time or registered data propagates through the SN74LVCH16652ADL. A low level selects real-time pass-through; a high level selects data previously latched by CLKAB or CLKBA - with internal logic preventing glitches during transitions between modes.

SN74LVCH16652ADL Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVCH

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

Packaging:: Bulk

Product Status:: Active

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:: 1.65V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-SSOP

SN74LVCH16652ADL FAQ

1.How can I place an order for SN74LVCH16652ADL through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVCH16652ADL 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 SN74LVCH16652ADL reliable?

The price and inventory of SN74LVCH16652ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16652ADL is usually 5 days.

3.What payment methods are accepted for SN74LVCH16652ADL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCH16652ADL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVCH16652ADL?

SN74LVCH16652ADL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVCH16652ADL 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 SN74LVCH16652ADL?

For technical support, including SN74LVCH16652ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16652ADL requirements.

6.How does Aetrix verify that SN74LVCH16652ADL is sourced from the original manufacturer or authorized distributors?

All SN74LVCH16652ADL 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 SN74LVCH16652ADL meets industry standards.

7.What is the process for return or replacement of SN74LVCH16652ADL?

All SN74LVCH16652ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16652ADL, 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 SN74LVCH16652ADL part is unused and in its original packaging.

Return procedure for SN74LVCH16652ADL:

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…