Nexperia USA Inc. 74ABTH162245ADL,11

Overview

74ABTH162245ADL,11 from Nexperia is a 16-bit bidirectional bus transceiver with integrated 30 Ω series termination resistors, dual 8-bit direction control (1DIR/2DIR), independent output enables (1OE/2OE), and bus-hold inputs. It operates from 4.5 V to 5.5 V, delivers ±32 mA/±12 mA drive strength, and supports partial power-down via IOFF circuitry. It is used in high-speed backplane and memory interface applications requiring impedance-matched signal integrity.

For engineers reviewing the 74ABTH162245ADL,11 datasheet, 74ABTH162245ADL,11 pinout, 74ABTH162245ADL,11 application, or 74ABTH162245ADL,11 equivalent, this page provides verified functional context, TSSOP48 pin mapping, static/dynamic timing specs, bus-hold behavior, IOFF leakage values, and real-world interface use cases - all extracted from the official Rev. 7 (24 June 2024) product data sheet.

Technical Context

This device implements two independent 8-bit transceiver blocks sharing no internal coupling: each block has dedicated DIR and OE controls, enabling asymmetric bidirectional data flow (e.g., A→B on port 1 while B→A on port 2). The bus-hold feature actively maintains last-valid logic state on unused inputs without external pull-ups, drawing only 50–75 μA per input at VCC = 4.5–5.5 V.

Its BiCMOS architecture achieves 1.0–4.9 ns propagation delays (tPLH/tPHL) and 1.5–7.0 ns 3-state enable/disable times (tPZH/tPLZ) under 5.0 V ±0.5 V operation. The integrated 30 Ω series resistors are placed on all 16 I/O pins (A0–A7, B0–B7 for both ports), reducing reflections in point-to-point or stubbed bus topologies without requiring discrete termination.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bus transceiver applications.

Compared with 74ABTH162245ADL,11, the ABT162245ADGG saves ~150 μA quiescent current but forfeits bus-hold protection, while the SN74LVC16245ADGGR enables 3.3 V integration at the cost of losing 5 V compatibility, IOFF, and built-in 30 Ω resistors - making it unsuitable for drop-in replacement in existing 5 V terminated designs.

Availability

74ABTH162245ADL,11 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, hot-swappable module interconnects, and programmable logic controller I/O expansion requiring stable component supply and long-term lifecycle support.

Supply support for 74ABTH162245ADL,11 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability standard logic, analog, and MOSFET solutions, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.

The 74ABTH162245A belongs to Nexperia's advanced ABT logic family, engineered for high-speed 5 V bus interfacing with integrated termination and robust partial-power-down capability in industrial environments.

FAQ

Is 74ABTH162245ADL,11 compatible with 3.3 V logic levels?

No. This device requires 4.5 V to 5.5 V supply and is specified only for 5 V TTL/LVTTL interfacing. Its VIH minimum is 2.0 V and VIL maximum is 0.8 V at VCC = 4.5 V, but input thresholds scale with VCC - applying 3.3 V signals directly risks undefined operation or excessive input current due to internal clamping diodes.

Can both 8-bit ports operate simultaneously in opposite directions?

Yes. Port 1 (1A/1B) and Port 2 (2A/2B) are fully independent: 1DIR/1OE control only pins 1A0–1A7 and 1B0–1B7, while 2DIR/2OE control only 2A0–2A7 and 2B0–2B7. This allows concurrent A→B on port 1 and B→A on port 2 without timing conflict or crosstalk.

What is the purpose of the eight GND pins in the TSSOP48 package?

The eight GND pins provide low-inductance, distributed return paths for all 16 bidirectional I/Os and internal switching nodes. This minimizes ground bounce during simultaneous 32 mA sink events, stabilizes VCC rail integrity, and ensures consistent timing across all channels - critical for maintaining signal integrity in high-speed parallel buses.

Does the bus-hold feature affect propagation delay or power consumption?

Bus-hold adds ≤75 μA per input at VCC = 5.5 V but does not alter propagation delay specifications: tPLH/tPHL remain 1.0–4.9 ns as measured in the datasheet with bus-hold active. The feature engages only when input voltage is near the switching threshold (0.8–2.0 V), drawing negligible current outside that zone.