Texas Instruments SN74ALVCH16832DGGR

Overview

SN74ALVCH16832DGGR from Texas Instruments is a 1-to-4 address register/driver with 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation. It functions as either a transparent buffer or edge-triggered D-type register depending on the SEL input state, features dual 7-bit output-enable control (OE1/OE2), and integrates bus-hold circuitry to eliminate external pull resistors - ideal for driving four memory banks from a single address bus in space-constrained embedded systems.

For engineers reviewing the SN74ALVCH16832DGGR datasheet, SN74ALVCH16832DGGR pinout, SN74ALVCH16832DGGR application, or SN74ALVCH16832DGGR equivalent, key selection considerations include its dual-mode operation (buffer/register), 3.3-V-compatible timing (t_pd ≤ 4.4 ns at V_CC = 3.3 V), bus-hold inputs, and TSSOP-48 package footprint compatibility with high-density PCB layouts.

Technical Context

This device implements a 1-bit input-to-4-bit output architecture with independent clock (CLK), select (SEL), and two active-low output-enable (OE1, OE2) controls. Its internal logic supports simultaneous registration of A1–A7 inputs on CLK rising edge when SEL = L, while maintaining full 3-state output control regardless of mode.

Bus-hold circuitry actively maintains valid logic levels on all A-inputs without external components, and absolute maximum ratings support robust operation up to 4.6 V supply and –65°C to 150°C storage - critical for industrial-grade reliability in mixed-voltage memory interface designs.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 48-pin thin shrink small-outline package with exposed pad not present; JEDEC MO-153 compliant; body dimensions 6.20 mm × 12.60 mm × 1.20 mm max height; 0.5-mm lead pitch; gull-wing leads; moisture sensitivity level MSL-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVCH16832DGGR, the SN74ALVCH162244DGGR offers simpler buffering without clocking, while the SN74LVC16373ADGGR provides stronger drive but sacrifices bus-hold and fine-grained output control - making SN74ALVCH16832DGGR uniquely suited for synchronized, low-component-count, multi-bank memory addressing.

Availability

SN74ALVCH16832DGGR is available at Aetrix Electronics and suitable for memory subsystem design, FPGA peripheral expansion, industrial PLC backplane routing, and legacy bus modernization requiring stable component supply and long-term manufacturability.

Supply support for SN74ALVCH16832DGGR 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 SN74ALVCH16832DGGR belongs to TI's Widebus™ family of advanced CMOS logic devices, engineered specifically for high-speed, low-voltage memory interface and address distribution applications in space- and power-constrained systems.

FAQ

What is the primary function of the SN74ALVCH16832DGGR?

The SN74ALVCH16832DGGR is a 1-to-4 address register/driver with 3-state outputs that operates in two modes: as a transparent buffer (SEL = H) or as an edge-triggered D-type register (SEL = L). In register mode, it latches A1–A7 inputs on the rising edge of CLK and drives them to four independent 7-bit output groups. This dual functionality makes SN74ALVCH16832DGGR ideal for synchronizing address distribution across multiple memory banks or peripherals.

Does the SN74ALVCH16832DGGR require external pullup or pulldown resistors on its address inputs?

No, the SN74ALVCH16832DGGR includes integrated bus-hold circuitry on all A1–A7 inputs, which actively maintains valid logic states without external resistors. This feature eliminates the need for 14 discrete pull components, reduces PCB area, and prevents floating-input-related system instability - a key advantage confirmed in TI's SCES098G datasheet for SN74ALVCH16832DGGR.

How does the output-enable architecture of the SN74ALVCH16832DGGR differ from standard octal buffers?

Unlike standard octal buffers, the SN74ALVCH16832DGGR features two independent active-low output-enable inputs: OE1 controls outputs Y1–Y14, and OE2 controls Y15–Y28. This 14+14 split enables selective 3-state control of upper and lower output groups - allowing dynamic isolation of memory banks or peripheral sets without redesigning logic or adding discrete gates. This granular control is intrinsic to SN74ALVCH16832DGGR's architecture.

What is the maximum clock frequency supported by the SN74ALVCH16832DGGR in register mode?

The SN74ALVCH16832DGGR supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), as specified in the timing requirements table of the official datasheet. This allows reliable edge-triggered registration of address data at DDR-150 speeds, making SN74ALVCH16832DGGR suitable for high-throughput memory controllers where precise address timing is critical.

Can the SN74ALVCH16832DGGR operate reliably at 1.8 V, and what performance trade-offs apply?

Yes, the SN74ALVCH16832DGGR is fully specified for 1.65 V to 3.6 V operation, including 1.8 V. At 1.8 V, propagation delay increases to 4.1 ns (vs. 4.4 ns at 3.3 V), and output drive strength decreases to ±4 mA (IOH/IOL), but all timing parameters remain guaranteed. This voltage flexibility allows SN74ALVCH16832DGGR to interface directly with 1.8-V FPGAs and low-power microcontrollers without level-shifting circuitry.