Texas Instruments SN74ALVCH162344VR

Overview

SN74ALVCH162344VR from Texas Instruments is a 1-bit-to-4-bit address driver with 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation. It supports four independent memory address expansions per input, delivers ±12-mA drive at 3.3 V, features integrated 26-Ω series output resistors, and includes bus-hold circuitry on all data inputs-enabling direct interface with high-density memory subsystems in industrial control and telecom backplanes.

For engineers reviewing the SN74ALVCH162344VR datasheet, SN74ALVCH162344VR pinout, SN74ALVCH162344VR application, or SN74ALVCH162344VR equivalent, key selection criteria include its 56-pin TSSOP (DGV) package, 4.4-ns max propagation delay at 3.3 V, bus-hold input stabilization, 3-state output enable architecture, and compatibility with mixed-voltage 1.8-V/2.5-V/3.3-V memory address buses.

Technical Context

This device implements eight independent 1-bit-to-4-bit address translation channels (A1–A8 → B1–B4 per bank), each controlled by dedicated OE1–OE4 signals. Each channel operates as a non-inverting buffer with three-state output control, supporting simultaneous or staggered bank enablement for dynamic memory mapping.

It uses advanced ALVC logic with bus-hold circuitry that maintains valid logic states on undriven inputs without external resistors, and integrates on-die 26-Ω series termination to suppress signal overshoot/undershoot-eliminating need for discrete termination in point-to-point address routing.

Key Specifications

Pinout & Package

SN74ALVCH162344VR is housed in a 56-pin Thin Shrink Small Outline Package (TSSOP), designated DGV, with 0.5-mm pitch, 13.9-mm × 6.1-mm body size, and 1.2-mm max height. The package is RoHS-compliant, moisture sensitivity level (MSL) 1, and rated for reflow up to 260°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar address driver applications.

Compared with SN74ALVCH162344GR and SN74ALVCH162344DL, the SN74ALVCH162344VR provides identical logic behavior and timing in the smallest TSSOP variant (DGV), optimized for high-density automated assembly with minimal thermal footprint-making it ideal for space-constrained telecom and embedded compute modules.

Availability

SN74ALVCH162344VR is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line cards, automated test equipment resource multiplexing, and memory expansion subsystems requiring stable component supply across extended product lifecycles.

Supply support for SN74ALVCH162344VR 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 90 years of innovation in industrial, automotive, and communications markets.

The SN74ALVCH162344VR belongs to TI's Widebus™ family of advanced low-voltage CMOS logic devices, engineered specifically for high-speed, low-power address and data bus interface in memory-rich embedded systems.

FAQ

What is the function of the OE1–OE4 pins on the SN74ALVCH162344VR?

The OE1–OE4 pins on the SN74ALVCH162344VR are active-low output-enable controls, each managing a distinct 4-bit output bank (B1–B4). When an OE pin is low, its associated four outputs drive the translated address; when high, those outputs enter high-impedance state. This allows independent gating of memory address segments without affecting other banks-critical for dynamic memory partitioning in the SN74ALVCH162344VR.

Does the SN74ALVCH162344VR require external pullup resistors on its address inputs?

No, the SN74ALVCH162344VR does not require external pullup or pulldown resistors on its A1–A8 inputs because it integrates active bus-hold circuitry. This feature maintains a valid logic state on undriven or floating inputs using ±75 µA internal current sources-ensuring deterministic behavior during power-up, hot-swap, or bus contention events in the SN74ALVCH162344VR.

What is the maximum propagation delay of the SN74ALVCH162344VR at 1.8 V operation?

The maximum propagation delay (t_pd) of the SN74ALVCH162344VR is specified as 5.1 ns at V_CC = 1.8 V, per the switching characteristics table in the official datasheet. This value reflects worst-case delay across temperature and voltage corners, and is measured under standard load conditions-confirming timing compliance for 1.8-V memory interfaces in the SN74ALVCH162344VR.

Can the SN74ALVCH162344VR be used in a mixed-voltage system with both 2.5-V and 3.3-V components?

Yes, the SN74ALVCH162344VR supports mixed-voltage operation from 1.65 V to 3.6 V, allowing direct connection between 2.5-V controllers and 3.3-V memory devices. Its input thresholds scale with V_CC, and output drive strength adjusts accordingly-enabling seamless integration without level shifters in the address path of the SN74ALVCH162344VR.

What package type and dimensions does the SN74ALVCH162344VR use?

The SN74ALVCH162344VR uses a 56-pin Thin Shrink Small Outline Package (TSSOP) with DGV designation: 13.9 mm × 6.1 mm body size, 1.2 mm max height, and 0.5-mm lead pitch. Its land pattern follows JEDEC MO-153 standards, and it is rated MSL-1 for unlimited floor life-making it suitable for high-volume SMT assembly in the SN74ALVCH162344VR.