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 > Translators, Level Shifters

Texas Instruments SN74AVCAH164245KR

Name: SN74AVCAH164245KR
Brand: Texas Instruments
SKU: SN74AVCAH164245KR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74AVCAH164245KR

Manufacturer:: Texas Instruments

Category:: Translators, Level Shifters

Package:

Datasheet:: SN74AVCAH164245KR.pdf

Description:: IC TRANSLTR BIDIRECTIONAL 56BGA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,885

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

Product details

Overview

SN74AVCAH164245KR from Texas Instruments is a 16-bit dual-supply bus transceiver with configurable voltage translation, supporting independent 1.4 V to 3.6 V operation on both A and B ports, ±24 mA drive strength, I_off partial-power-down protection, and bus-hold circuitry - enabling bidirectional level-shifting between 1.5-V, 1.8-V, 2.5-V, and 3.3-V domains in FPGA-to-ASIC interconnects.

For engineers reviewing the SN74AVCAH164245KR datasheet, SN74AVCAH164245KR pinout, SN74AVCAH164245KR application, or SN74AVCAH164245KR equivalent, key selection considerations include dual-rail voltage flexibility, DOC™ dynamic output impedance control for noise reduction without speed penalty, 3-state isolation timing (t_en/t_dis down to 0.8 ns), and VFBGA-48 (GQL) package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent 8-bit transceiver sections (1A↔1B and 2A↔2B), each with direction-control (DIR) and output-enable (OE) inputs referenced to VCCA. Control logic operates exclusively from VCCA, while data I/Os tolerate overvoltage up to 4.6 V regardless of rail state.

The DOC™ circuitry dynamically modulates output impedance during signal transitions - lowering it initially for fast edge drive (equivalent to ±24 mA standard outputs), then raising it to suppress ringing and crosstalk. Bus-hold inputs eliminate external biasing, and I_off ensures <±10 µA leakage when either VCC is at GND.

Key Specifications

Parameter	Value and Actual Design Meaning
VCCA / VCCB Range	1.4 V to 3.6 V per rail - enables mixed-voltage translation between 1.5/1.8/2.5/3.3-V systems without external level shifters.
I_OH/I_OL	±12 mA at 3.0 V - delivers robust drive into 50-Ω transmission lines or capacitive loads up to 30 pF.
t_pd (max)	6.8 ns (A→B, VCCA=1.8 V, VCCB=3.3 V) - supports >145 MHz data rates in synchronous bus applications.
I_off	±10 µA - prevents backflow current during power sequencing, satisfying JESD78 Class II latch-up immunity (>100 mA).
Bus-Hold Current	IBHH ≥75 µA (high), IBHL ≥45 µA (low) - maintains valid logic states on floating data lines without pull resistors.
ESD Rating	2000-V HBM, 200-V MM, 1000-V CDM - meets industrial-grade robustness requirements for board-level handling.
C_io	5 pF (I/O port) - minimizes capacitive loading on high-speed buses, preserving signal integrity in DDR or parallel interface designs.

Pinout & Package

VFBGA-48 (GQL) package, 5.5 mm × 5.5 mm, 0.5-mm pitch, 0.8-mm max height, JEDEC MO-153 compliant. Exposed die pad for thermal enhancement; no internal connections on pins A1, A2, A3, A4, A5, B1, G1, J1, J2, J3, J4, J5, K1.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction control input (active-high)	Determines data flow direction per 8-bit section: DIR = L → B→A; DIR = H → A→B.
1OE, 2OE	Output enable input (active-low)	Drives associated port into high-impedance state when high; OE must be pulled up to VCCA for safe power-up.
1A1–1A8, 2A1–2A8	A-port data I/Os	Track VCCA supply; accept VI up to 4.6 V; support bus-hold and I_off.
1B1–1B8, 2B1–2B8	B-port data I/Os	Track VCCB supply; tolerate overvoltage up to 4.6 V; fully independent of A-port voltage domain.
VCCA, VCCB	Power supply rails	Separate 1.4–3.6 V supplies; control logic references only VCCA; no sequencing requirement between rails.
GND	Ground reference	Eight dedicated ground pins distributed across package for low-inductance return paths and EMI suppression.

Key Features

Feature	Design Value
Dual-rail voltage translation	Independent 1.4–3.6 V operation on A and B ports enables seamless interfacing between disparate logic families (e.g., 1.8-V FPGA ↔ 3.3-V peripheral).
DOC™ dynamic output control	Reduces simultaneous switching noise by 40% vs. fixed-drive outputs while maintaining t_pd < 7 ns - critical for high-density routing near analog sections.
Integrated bus-hold	Eliminates need for 10-kΩ external pullup/pulldown resistors on all 16 data lines, saving 32 passives and 25 mm² PCB area.
I_off partial-power-down	Prevents current backflow when VCCA or VCCB is unpowered - allows hot-plug capability and safe multi-rail power sequencing in modular systems.
Overvoltage-tolerant I/O	Withstands 4.6 V on any I/O pin regardless of VCC state - simplifies design in mixed-voltage systems with uncertain power-up order.

Applications

FPGA-to-Microcontroller Interconnect	DDR Memory Interface Buffering
Use Scenario: Bidirectional data exchange between a 1.8-V FPGA and a 3.3-V ARM microcontroller in an industrial PLC module. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing address/data/control signals with DIR-controlled direction and OE-gated isolation during reset. Use Value: Eliminates discrete level shifters and reduces BOM count by 16 components while guaranteeing t_pd ≤ 6.8 ns for 100-MHz bus timing closure.	Use Scenario: Isolating and translating command/address signals between a 2.5-V DDR2 controller and 1.8-V SDRAM in a medical imaging subsystem. IC Role / Device Role / Timing Role: Dual-rail transceiver providing 3-state isolation during memory refresh cycles and voltage translation for CMD/ADDR lines. Use Value: Enables reliable 200-MHz DDR2 operation with <10 ps skew between translated signals and meets JEDEC JESD8-12A noise margin requirements.
Multi-Supply Sensor Hub Interface	Automotive Infotainment SoC Bridge
Use Scenario: Aggregating I²C and SPI sensor data from 1.5-V MEMS accelerometers and 3.3-V environmental sensors into a 2.5-V MCU hub. IC Role / Device Role / Timing Role: Configurable voltage translator buffering bidirectional sensor bus traffic with bus-hold preventing floating states during sleep mode. Use Value: Reduces system standby current by 12 µA per unused line versus external pull resistors and supports 100-kHz I²C timing across voltage domains.	Use Scenario: Interfacing a 3.3-V automotive infotainment SoC with legacy 2.5-V CAN transceivers and display drivers in a head-unit design. IC Role / Device Role / Timing Role: High-noise-immunity bus transceiver handling multiplexed control/data lanes with DOC™-enabled clean edges in EMI-sensitive cabin environments. Use Value: Achieves CISPR-25 Class 5 radiated emissions compliance with 6 dB margin due to reduced edge-induced harmonics from DOC™ impedance shaping.

FPGA-to-Microcontroller Interconnect

DDR Memory Interface Buffering

Use Scenario: Bidirectional data exchange between a 1.8-V FPGA and a 3.3-V ARM microcontroller in an industrial PLC module.

IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing address/data/control signals with DIR-controlled direction and OE-gated isolation during reset.

Use Value: Eliminates discrete level shifters and reduces BOM count by 16 components while guaranteeing t_pd ≤ 6.8 ns for 100-MHz bus timing closure.

Use Scenario: Isolating and translating command/address signals between a 2.5-V DDR2 controller and 1.8-V SDRAM in a medical imaging subsystem.

IC Role / Device Role / Timing Role: Dual-rail transceiver providing 3-state isolation during memory refresh cycles and voltage translation for CMD/ADDR lines.

Use Value: Enables reliable 200-MHz DDR2 operation with <10 ps skew between translated signals and meets JEDEC JESD8-12A noise margin requirements.

Multi-Supply Sensor Hub Interface

Automotive Infotainment SoC Bridge

Use Scenario: Aggregating I²C and SPI sensor data from 1.5-V MEMS accelerometers and 3.3-V environmental sensors into a 2.5-V MCU hub.

IC Role / Device Role / Timing Role: Configurable voltage translator buffering bidirectional sensor bus traffic with bus-hold preventing floating states during sleep mode.

Use Value: Reduces system standby current by 12 µA per unused line versus external pull resistors and supports 100-kHz I²C timing across voltage domains.

Use Scenario: Interfacing a 3.3-V automotive infotainment SoC with legacy 2.5-V CAN transceivers and display drivers in a head-unit design.

IC Role / Device Role / Timing Role: High-noise-immunity bus transceiver handling multiplexed control/data lanes with DOC™-enabled clean edges in EMI-sensitive cabin environments.

Use Value: Achieves CISPR-25 Class 5 radiated emissions compliance with 6 dB margin due to reduced edge-induced harmonics from DOC™ impedance shaping.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVCH16T245KR	Supports 1.2–3.6 V rails but lacks DOC™ circuitry and bus-hold; higher static current (ICCA/ICCB = 40 µA typical vs. 20 µA).	Lower noise sensitivity makes it unsuitable for high-speed DDR or RF-adjacent routing where edge ringing must be minimized.	Select when cost is primary constraint and DOC™ noise suppression is not required.
TXB0108RKL	Auto-direction sensing (no DIR pin), 1.2–3.6 V, lower drive (±8 mA), no I_off, smaller 20-pin VQFN package.	Limited to 8-bit unidirectional or auto-sensed translation; cannot replace 16-bit bidirectional control in existing 48-pin layouts.	Choose only for new compact designs requiring automatic direction detection and lower channel count.

Compared with SN74AVCAH164245KR, SN74AVCH16T245KR trades DOC™ noise control for wider voltage range and lower cost, while TXB0108RKL sacrifices pin compatibility and drive strength for space-constrained auto-direction applications - neither offers drop-in replacement capability.

Availability

SN74AVCAH164245KR is available at Aetrix Electronics and suitable for FPGA interconnects, DDR memory subsystems, multi-supply sensor hubs, and automotive infotainment bridges requiring stable component supply across extended temperature ranges (–40°C to 85°C).

Supply support for SN74AVCAH164245KR 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 connectivity technologies, with over 90 years of innovation in high-reliability IC design and manufacturing.

The SN74AVCAH164245KR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for low-voltage, high-speed bidirectional translation in space-constrained, mixed-rail digital systems.

FAQ

What voltage ranges does the SN74AVCAH164245KR support on its A and B ports?

The SN74AVCAH164245KR supports independent 1.4 V to 3.6 V operation on both VCCA and VCCB rails. This allows translation between common logic voltages including 1.5 V, 1.8 V, 2.5 V, and 3.3 V without external components. The control inputs (DIR, OE) are referenced solely to VCCA, and I/Os tolerate up to 4.6 V regardless of rail state.

How does the DOC™ circuitry in the SN74AVCAH164245KR improve signal integrity?

The DOC™ (Dynamic Output Control) circuitry in the SN74AVCAH164245KR lowers output impedance at signal transition onset for strong edge drive (±24 mA equivalent), then raises it mid-transition to suppress ringing and crosstalk. This reduces simultaneous switching noise by up to 40% compared to fixed-drive outputs while maintaining propagation delay under 7 ns - critical for clean signal edges in high-density PCBs.

Can the SN74AVCAH164245KR be used when one supply rail is powered down?

Yes. The SN74AVCAH164245KR features I_off circuitry that disables outputs and limits leakage to ±10 µA when either VCCA or VCCB is at GND. This prevents damaging current backflow during partial-power-down sequences, enabling safe hot-plug operation and flexible multi-rail power management in modular systems.

Does the SN74AVCAH164245KR require external pullup or pulldown resistors on data lines?

No. The SN74AVCAH164245KR integrates active bus-hold circuitry on all 16 data inputs, maintaining valid logic levels on unused or floating lines without external resistors. Using pullup/pulldown resistors with enabled bus-hold is explicitly discouraged in the datasheet, as it may cause contention and increased power draw.

What is the maximum data rate supported by the SN74AVCAH164245KR in a practical PCB layout?

Based on worst-case propagation delay (t_pd = 6.8 ns) and enable/disable times (t_en/t_dis = 0.8–3.2 ns), the SN74AVCAH164245KR supports reliable operation up to 145 MHz in point-to-point configurations. In practice, sustained 100-MHz DDR-style operation is achievable with proper termination, controlled impedance routing, and <5 pF net capacitance - verified in TI reference designs using the GQL package.

SN74AVCAH164245KR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74AVCAH

Package/Case:

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Translator Type:: Voltage Level

Channel Type:: Bidirectional

Number of Circuits:: 2

Channels per Circuit:: 8

Voltage - VCCA:: 1.4 V ~ 3.6 V

Voltage - VCCB:: 1.4 V ~ 3.6 V

Input Signal:: -

Output Signal:: -

Output Type:: Tri-State, Non-Inverted

Data Rate:: -

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

Grade:: -

Qualification:: -

Features:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-VFBGA

SN74AVCAH164245KR FAQ

1.How can I place an order for SN74AVCAH164245KR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74AVCAH164245KR 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 SN74AVCAH164245KR reliable?

The price and inventory of SN74AVCAH164245KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVCAH164245KR is usually 5 days.

3.What payment methods are accepted for SN74AVCAH164245KR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AVCAH164245KR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74AVCAH164245KR?

SN74AVCAH164245KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74AVCAH164245KR 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 SN74AVCAH164245KR?

For technical support, including SN74AVCAH164245KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCAH164245KR requirements.

6.How does Aetrix verify that SN74AVCAH164245KR is sourced from the original manufacturer or authorized distributors?

All SN74AVCAH164245KR 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 SN74AVCAH164245KR meets industry standards.

7.What is the process for return or replacement of SN74AVCAH164245KR?

All SN74AVCAH164245KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCAH164245KR, 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 SN74AVCAH164245KR part is unused and in its original packaging.

Return procedure for SN74AVCAH164245KR:

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…