Texas Instruments SN74ALVCH162244GR

Overview

SN74ALVCH162244GR from Texas Instruments is a 16-bit non-inverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation. It features four independent 4-bit sections, each with active-low output-enable (OE) control, bus-hold circuitry on all data inputs, and integrated 26-Ω series output resistors to suppress overshoot/undershoot - enabling direct connection to high-speed buses in memory address, clock distribution, and bus-transceiver applications.

For engineers reviewing the SN74ALVCH162244GR datasheet, SN74ALVCH162244GR pinout, SN74ALVCH162244GR application, or SN74ALVCH162244GR equivalent, key selection criteria include its 48-pin TSSOP (DGG) package, -40°C to 85°C industrial temperature range, 12-mA output drive capability, bus-hold input retention, and compatibility with mixed-voltage system interfacing across 1.65–3.6 V logic domains.

Technical Context

This device implements four independent 4-bit buffer sections, each with symmetrical active-low OE control and true (non-inverting) output logic. Each section supports configurable grouping: four 4-bit, two 8-bit, or one unified 16-bit buffer mode via shared OE signals (1OE–4OE).

It uses TI's EPIC™ submicron CMOS process and integrates bus-hold circuitry on all 16 A-inputs to maintain valid logic states without external pullup/pulldown resistors. Outputs are designed to sink up to 12 mA while incorporating on-die 26-Ω series termination to reduce signal integrity issues in high-speed parallel bus environments.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74LVC162244ADGGR and 74ALVCH162244TTR, the SN74ALVCH162244GR uniquely combines bus-hold, 26-Ω output termination, and industrial temperature rating in a single, widely available TSSOP-48 package - minimizing design iteration and qualification effort for high-reliability embedded bus interfaces.

Availability

SN74ALVCH162244GR is available at Aetrix Electronics and suitable for memory address buffering, clock distribution, and industrial I/O expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74ALVCH162244GR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The SN74ALVCH162244GR belongs to TI's Widebus™ family of high-speed, low-voltage bus-interface ICs - engineered specifically to increase density and performance of 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters in space-constrained systems.

FAQ

What is the recommended power-up sequence for SN74ALVCH162244GR?

TI recommends tying all OE inputs (1OE–4OE) to V_CC through a pullup resistor during power-up to guarantee outputs remain in high-impedance state until system initialization completes. The minimum resistor value depends on the driver's current-sinking capability - typically 10 kΩ suffices for most applications using SN74ALVCH162244GR in industrial systems.

Does SN74ALVCH162244GR support mixed-voltage operation between input and output sides?

Yes - SN74ALVCH162244GR operates with a single V_CC supply (1.65–3.6 V) and accepts input voltages from 0 V to V_CC, making it compatible with mixed-voltage signaling when driven by lower-voltage logic (e.g., 1.8-V MCU) and interfacing to higher-voltage peripherals (e.g., 3.3-V memory), provided V_CC is set to the target output voltage level.

How does the bus-hold circuitry in SN74ALVCH162244GR function during power-down?

The bus-hold circuitry in SN74ALVCH162244GR remains active down to V_CC ≈ 0.5 V, retaining the last-valid logic state on all 16 A-inputs even during brown-out or controlled power-down sequences - preventing spurious transitions that could corrupt downstream logic states in systems using SN74ALVCH162244GR for critical control-path buffering.

Can SN74ALVCH162244GR be used as a level shifter between 1.8-V and 3.3-V domains?

No - SN74ALVCH162244GR is not a bidirectional level shifter. It requires V_CC to match the output domain voltage. To interface 1.8-V inputs to 3.3-V outputs, set V_CC = 3.3 V; the device will correctly interpret 1.8-V logic-high inputs (VIH min = 2.0 V at V_CC = 3.3 V) and drive 3.3-V outputs. For true bidirectional translation, a dedicated level shifter like TXB0108 is required instead of SN74ALVCH162244GR.

What is the maximum capacitive load SN74ALVCH162244GR can drive while maintaining specified timing?

TI characterizes SN74ALVCH162244GR with CL = 30 pF (Figures 1–2) and CL = 50 pF (Figure 3). The device reliably meets all switching specifications up to 50 pF per output. Driving loads >50 pF may increase propagation delay and degrade edge rates - for heavier loads, verify timing margins in-system or consider adding local series termination, as SN74ALVCH162244GR's internal 26-Ω resistor is optimized for ~50-pF net capacitance.