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 74AVCAH164245GRDR

Name: 74AVCAH164245GRDR
Brand: Texas Instruments
SKU: 74AVCAH164245GRDR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74AVCAH164245GRDR

Manufacturer:: Texas Instruments

Category:: Translators, Level Shifters

Package:

Datasheet:: 74AVCAH164245GRDR.pdf

Description:: IC TRANSLTR BIDIRECTIONAL 54BGA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,971

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

Product details

Overview

74AVCAH164245GRDR from Texas Instruments is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs, designed for bidirectional level-shifting between 1.4-V to 3.6-V domains (e.g., 1.8-V ↔ 3.3-V). It features I_off partial-power-down support, bus-hold on all data inputs, and DOC™ dynamic output control delivering ±24 mA drive at 2.5 V. It enables isolated interconnect in mixed-voltage memory or peripheral buses.

For engineers reviewing the 74AVCAH164245GRDR datasheet, 74AVCAH164245GRDR pinout, 74AVCAH164245GRDR application, or 74AVCAH164245GRDR equivalent, key selection criteria include dual-rail supply flexibility (VCCA/VCCB = 1.4–3.6 V), guaranteed 3.1 ns min/7.3 ns max propagation delay across voltage combinations, I_off protection, and TSSOP-48 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

This device implements two independent 8-bit transceiver sections (1A↔1B and 2A↔2B), each controlled by dedicated DIR and OE pins referenced to VCCA. Its fully configurable dual-rail architecture allows simultaneous operation of A-port (tracking VCCA) and B-port (tracking VCCB) across non-overlapping voltage domains without external biasing.

The DOC™ circuitry dynamically modulates output impedance during signal transitions-lowering it initially for fast edge drive, then raising it to suppress switching noise-while maintaining full-speed performance. Bus-hold circuitry actively maintains valid logic levels on unused data inputs, eliminating need for external pull resistors.

Key Specifications

Parameter	Value and Actual Design Meaning
Voltage range (VCCA/VCCB)	1.4 V to 3.6 V per rail - enables direct translation between 1.5-V, 1.8-V, 2.5-V, and 3.3-V logic families without level-shifters.
Propagation delay (tpd)	1.4 ns (min) to 7.3 ns (max) - measured A↔B or B↔A under VCCA/VCCB = 3.3 V/1.5 V to 3.3 V/3.3 V conditions; ensures timing predictability in high-speed interconnects.
Output drive (IOH/IOL)	±24 mA at 2.5 V - matches standard LVTTL/LVCMOS drive strength, supporting fanout to multiple loads without buffers.
I_off current	±10 µA maximum - prevents backflow current when either VCC rail is at GND, enabling safe partial power-down in hot-swap or low-power standby modes.
Bus-hold input current	±100 µA to ±525 µA (IBHLO/IBHHO) - sustains stable logic states on floating inputs, removing requirement for external pullup/pulldown resistors.
Power dissipation capacitance (CpdA/CpdB)	14–20 pF per transceiver - quantifies dynamic power consumption during switching; critical for estimating total I/O power in dense bus interfaces.

Pinout & Package

TSSOP-48 package (DGG), 12.4 mm × 6.1 mm × 1.2 mm body, 0.5-mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction control input (active-high)	Determines data flow direction per 8-bit section: DIR = L → B-to-A; DIR = H → A-to-B.
1OE, 2OE	Output enable input (active-low)	Drives associated port into high-impedance state when high; must be pulled up to VCCA for power-up safety.
1A1–1A8, 2A1–2A8	A-port data I/O (VCCA-referenced)	Connect to lower-voltage domain (e.g., 1.8-V processor bus); include bus-hold circuitry.
1B1–1B8, 2B1–2B8	B-port data I/O (VCCB-referenced)	Connect to higher-voltage domain (e.g., 3.3-V peripheral bus); tolerate overvoltage up to 4.6 V.
VCCA, VCCB	Independent supply rails	VCCA powers control inputs (DIR/OE) and A-port I/O; VCCB powers B-port I/O only - enables true dual-voltage operation.
GND	Ground reference	Eight dedicated ground pins distributed across package for low-inductance return paths and noise reduction.

Key Features

Feature	Design Value
Dual-rail voltage translation	Each port operates independently from 1.4 V to 3.6 V - eliminates need for discrete level shifters in heterogeneous SoC interfaces.
DOC™ dynamic output control	Reduces simultaneous switching noise by modulating output impedance mid-transition - maintains signal integrity without sacrificing speed.
Integrated bus-hold circuitry	Holds all 16 data inputs at valid logic levels when floating - removes 32 external resistors and associated board area/cost.
I_off partial-power-down protection	Disables outputs and blocks current flow if either VCC drops to GND - prevents damage during power sequencing or hot-plug events.
Overvoltage-tolerant I/O	B-port accepts up to 4.6 V regardless of VCCB - supports legacy 5-V tolerant peripherals connected to 3.3-V or lower domains.

Applications

Mobile Application Processor Interface	Industrial PLC Backplane
Use Scenario: Interfacing a 1.8-V mobile AP to a 3.3-V display controller or camera module. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing command/data flow between mismatched voltage domains with sub-8-ns latency. Use Value: Eliminates discrete level-shifter ICs and associated passive components, reducing BOM count and layout complexity while guaranteeing timing compliance.	Use Scenario: Isolating field I/O modules (24-V digital inputs) from a 2.5-V FPGA-based controller via optocoupler-isolated 3.3-V bus. IC Role / Device Role / Timing Role: 3-state-enabled bus buffer providing voltage translation and hot-swap-safe isolation between controller and modular backplane segments. Use Value: I_off protection prevents backfeed during module insertion/removal; bus-hold maintains valid states during transient disconnects.
Automotive ADAS Sensor Hub	Server Memory Subsystem
Use Scenario: Aggregating data from multiple 1.2-V MIPI CSI-2 image sensors into a 1.8-V SoC vision processor. IC Role / Device Role / Timing Role: Dual-supply transceiver translating sensor data streams while meeting automotive-grade ESD (2000-V HBM) and latch-up (>100 mA) requirements. Use Value: Integrated ESD protection and Class II latch-up immunity reduce need for external TVS diodes and improve system-level robustness in harsh environments.	Use Scenario: Buffering address/control signals between a 1.5-V DDR4 memory controller and 1.35-V LPDDR4 memory banks. IC Role / Device Role / Timing Role: Low-skew, low-capacitance bus transceiver ensuring setup/hold timing margins are preserved across voltage-domain boundaries. Use Value: CpdA/CpdB ≤20 pF minimizes dynamic loading; tpd consistency across VCCA/VCCB combinations simplifies timing closure in high-speed memory interfaces.

Mobile Application Processor Interface

Industrial PLC Backplane

Use Scenario: Interfacing a 1.8-V mobile AP to a 3.3-V display controller or camera module.

IC Role / Device Role / Timing Role: Bidirectional voltage translator managing command/data flow between mismatched voltage domains with sub-8-ns latency.

Use Value: Eliminates discrete level-shifter ICs and associated passive components, reducing BOM count and layout complexity while guaranteeing timing compliance.

Use Scenario: Isolating field I/O modules (24-V digital inputs) from a 2.5-V FPGA-based controller via optocoupler-isolated 3.3-V bus.

IC Role / Device Role / Timing Role: 3-state-enabled bus buffer providing voltage translation and hot-swap-safe isolation between controller and modular backplane segments.

Use Value: I_off protection prevents backfeed during module insertion/removal; bus-hold maintains valid states during transient disconnects.

Automotive ADAS Sensor Hub

Server Memory Subsystem

Use Scenario: Aggregating data from multiple 1.2-V MIPI CSI-2 image sensors into a 1.8-V SoC vision processor.

IC Role / Device Role / Timing Role: Dual-supply transceiver translating sensor data streams while meeting automotive-grade ESD (2000-V HBM) and latch-up (>100 mA) requirements.

Use Value: Integrated ESD protection and Class II latch-up immunity reduce need for external TVS diodes and improve system-level robustness in harsh environments.

Use Scenario: Buffering address/control signals between a 1.5-V DDR4 memory controller and 1.35-V LPDDR4 memory banks.

IC Role / Device Role / Timing Role: Low-skew, low-capacitance bus transceiver ensuring setup/hold timing margins are preserved across voltage-domain boundaries.

Use Value: CpdA/CpdB ≤20 pF minimizes dynamic loading; tpd consistency across VCCA/VCCB combinations simplifies timing closure in high-speed memory interfaces.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVCH16T245DGGR	Single-supply (1.2–3.6 V), no VCCA/VCCB separation; lacks I_off and DOC™; 24 mA drive at 1.8 V only.	Suitable for same-voltage-domain buffering; not for mixed-voltage translation.	Select when only single-rail operation is needed and cost is prioritized over isolation features.
SN74LVC16T245DGGR	Single-supply (1.65–3.6 V); no bus-hold; ±24 mA drive at 3.3 V; no I_off; higher VOL/VOH thresholds.	Requires external pull resistors; limited to ≥1.65-V systems; no partial-power-down capability.	Select for legacy 3.3-V-only designs where bus-hold and I_off are unnecessary.

Compared with SN74AVCH16T245DGGR and SN74LVC16T245DGGR, the 74AVCAH164245GRDR uniquely supports true dual-rail translation with I_off, DOC™, and bus-hold - making it the only option for robust, resistor-free, mixed-voltage interconnects requiring power sequencing safety and noise-controlled edges.

Availability

74AVCAH164245GRDR is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS subsystems, and server memory interface designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74AVCAH164245GRDR 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 decades of expertise in logic interface solutions.

The AVCAH family was engineered specifically for low-voltage, mixed-domain system interconnects - targeting power-constrained, noise-sensitive applications in portable electronics, industrial controls, and automotive electronics where voltage translation reliability and power sequencing safety are critical.

FAQ

What voltage ranges does the 74AVCAH164245GRDR support on its VCCA and VCCB rails?

The 74AVCAH164245GRDR supports independent supply voltages from 1.4 V to 3.6 V on both VCCA and VCCB rails. This enables translation between common logic families including 1.5-V, 1.8-V, 2.5-V, and 3.3-V domains. Operation outside this range violates absolute maximum ratings and may cause permanent damage.

How does the I_off feature protect the 74AVCAH164245GRDR during partial power-down?

The I_off circuitry in the 74AVCAH164245GRDR disables all outputs and limits leakage current to ±10 µA when either VCCA or VCCB is at GND. This prevents damaging back-current flow through the device during power sequencing or hot-swap events, ensuring safe operation in systems with staggered rail activation.

Can the 74AVCAH164245GRDR replace the SN74AVCH16T245 in an existing design?

No - the 74AVCAH164245GRDR is not a drop-in replacement for the SN74AVCH16T245 because it requires two independent supplies (VCCA and VCCB), whereas the AVCH variant uses a single supply. Pinouts differ, and control input referencing (to VCCA only) is incompatible with single-rail layouts. Redesign of power delivery and signal routing is required.

What is the purpose of the DOC™ circuitry in the 74AVCAH164245GRDR?

The DOC™ (Dynamic Output Control) circuitry in the 74AVCAH164245GRDR dynamically adjusts output impedance during signal transitions: lowering it initially for strong edge drive, then raising it to suppress ringing and crosstalk. This delivers ±24 mA peak drive without degrading signal integrity - a key advantage over fixed-drive transceivers in noise-sensitive applications.

Does the 74AVCAH164245GRDR require external pullup resistors on its DIR and OE pins?

OE pins must be tied to VCCA via a pullup resistor to ensure high-impedance state at power-up; minimum resistance depends on driver sink capability. DIR pins do not require pullups - they are CMOS inputs with bus-hold enabled only on data lines (A/B ports), not controls. External pullups on DIR are unnecessary and not recommended.

74AVCAH164245GRDR 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:: 54-TFBGA

74AVCAH164245GRDR FAQ

1.How can I place an order for 74AVCAH164245GRDR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AVCAH164245GRDR 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 74AVCAH164245GRDR reliable?

The price and inventory of 74AVCAH164245GRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCAH164245GRDR is usually 5 days.

3.What payment methods are accepted for 74AVCAH164245GRDR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVCAH164245GRDR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AVCAH164245GRDR?

74AVCAH164245GRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AVCAH164245GRDR 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 74AVCAH164245GRDR?

For technical support, including 74AVCAH164245GRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCAH164245GRDR requirements.

6.How does Aetrix verify that 74AVCAH164245GRDR is sourced from the original manufacturer or authorized distributors?

All 74AVCAH164245GRDR 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 74AVCAH164245GRDR meets industry standards.

7.What is the process for return or replacement of 74AVCAH164245GRDR?

All 74AVCAH164245GRDR units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCAH164245GRDR, 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 74AVCAH164245GRDR part is unused and in its original packaging.

Return procedure for 74AVCAH164245GRDR:

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…