Texas Instruments 74ALVCH162244GRG4

Overview

74ALVCH162244 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 supports four independent 4-bit buffers (or two 8-bit or one 16-bit configuration), features bus-hold on all data inputs, integrated 26-Ω output series resistors, and symmetrical active-low OE control - used in memory address buffering, clock distribution, and high-density bus interfacing.

For engineers reviewing the 74ALVCH162244 datasheet, 74ALVCH162244 pinout, 74ALVCH162244 application, or 74ALVCH162244 equivalent, key selection criteria include V_CC range compatibility (1.65–3.6 V), 3-state timing (t_en/t_dis ≤ 6.8 ns at 3.3 V), bus-hold functionality, output drive strength (±12 mA), and TSSOP-48 packaging for space-constrained PCB layouts.

Technical Context

The 74ALVCH162244 implements four independent 4-bit buffer sections, each with dedicated active-low output-enable (OE) control and true (non-inverting) logic. Its EPIC™ submicron CMOS process enables low-voltage operation while maintaining TTL-compatible thresholds across the full 1.65–3.6-V supply range.

Each output includes an integrated 26-Ω series resistor to suppress overshoot/undershoot without external termination, and all 32 data I/Os feature bus-hold circuitry to maintain valid logic states on floating inputs - eliminating need for external pullup/pulldown resistors in unused or unterminated lines.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC162244DGGR, the 74ALVCH162244 offers built-in bus-hold for reduced BOM and layout complexity; compared with 74ALVCH162245DGGR, it provides simpler unidirectional control but cannot replace bidirectional use cases - choice depends on directionality and input termination requirements.

Availability

74ALVCH162244 is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, industrial I/O expansion, and legacy bus interface designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74ALVCH162244 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 decades of experience in high-reliability industrial and automotive-grade components.

The 74ALVCH162244 belongs to TI's Widebus™ family of advanced logic devices, engineered specifically to increase density and performance in 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters.

FAQ

What is the recommended operating voltage range for the 74ALVCH162244?

The 74ALVCH162244 is characterized for operation from 1.65 V to 3.6 V on V_CC. This wide supply range allows interoperability across 1.8-V, 2.5-V, and 3.3-V logic families without level translation. Operation outside this range may cause functional failure or damage; absolute maximum rating is 4.6 V.

Does the 74ALVCH162244 require external pullup or pulldown resistors on its inputs?

No - the 74ALVCH162244 includes active bus-hold circuitry on all 32 data inputs, which maintains a valid logic state on floating or unterminated lines. This eliminates the need for external pullup or pulldown resistors, reducing BOM cost and PCB area. The 74ALVCH162244 bus-hold current is ±75 µA at 3 V.

What is the purpose of the four separate OE pins on the 74ALVCH162244?

The four active-low OE pins (1OE–4OE) provide independent 3-state control for each 4-bit buffer section. This enables flexible bus segmentation - for example, enabling only the upper 8 bits during a write cycle while holding lower bits in high-impedance. It supports dynamic power gating and avoids contention in multi-master systems.

Can the 74ALVCH162244 be used as a 16-bit unidirectional buffer?

Yes - the 74ALVCH162244 is configured as a true (non-inverting) unidirectional buffer with 16 inputs (A1–A4 per section) and 16 outputs (Y1–Y4 per section). All outputs are 3-state capable via their respective OE pins. It does not support bidirectional data flow like transceivers (e.g., 74ALVCH162245), making it ideal for address, control, or clock line buffering.

What package options are available for the 74ALVCH162244?

The 74ALVCH162244 is offered in two surface-mount packages: TSSOP-48 (DGG, 12.6 mm × 6.2 mm, 0.5-mm pitch) and SSOP-48 (DL, 15.9 mm × 7.5 mm, 0.635-mm pitch). The 74ALVCH162244GR variant uses the DGG package in tape-and-reel (2000 pcs/reel); the DL version is supplied in tubes (25 pcs/tube) or tape-and-reel (1000 pcs/reel).