NXP Semiconductors 74LVC162245ADGG:51

Overview

74LVC162245ADGG:51 from Nexperia is a 16-bit non-inverting 3-state transceiver with dual direction control (1DIR/2DIR) and dual output enable (1OE/2OE), designed for bidirectional bus interfacing in mixed-voltage systems. It operates from 1.2 V to 3.6 V, tolerates 5.5 V on I/Os when disabled, and integrates 30 Ω series termination resistors per output to suppress line noise. It supports use as two independent 8-bit transceivers or one unified 16-bit unit in high-speed digital backplanes.

For engineers reviewing the 74LVC162245ADGG:51 datasheet, 74LVC162245ADGG:51 pinout, 74LVC162245ADGG:51 application, or 74LVC162245ADGG:51 equivalent, key selection criteria include its 5 V-tolerant I/O capability, −40 °C to +125 °C industrial temperature range, TSSOP48 package compatibility, and bus-isolation behavior under nOE control.

Technical Context

This device implements dual independent 8-bit transceiver channels, each with separate direction (nDIR) and output enable (nOE) inputs, enabling flexible cascading and partial bus isolation. Its CMOS input structure supports TTL-level compatibility and accepts 3.3 V or 5 V logic inputs without level shifters.

The integrated 30 Ω series termination resistors are placed in both HIGH and LOW output stages to dampen signal reflections on PCB traces, reducing EMI and improving signal integrity in high-speed parallel buses. Bus hold functionality is absent in the 74LVC162245A variant-only present in the 74LVCH162245A family member.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1): plastic thin shrink small outline, 48 leads, 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 transceiver applications.

Compared with SN74LVC162245ADGGR and 74ALVC162245PW, the 74LVC162245ADGG:51 uniquely balances 5 V I/O tolerance, industrial temperature rating, and integrated termination-making it optimal for mixed-voltage industrial backplanes where reliability and signal integrity are prioritized over marginal speed gains.

Availability

74LVC162245ADGG:51 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and server memory subsystems requiring stable component supply across extended temperature ranges and mixed-voltage architectures.

Supply support for 74LVC162245ADGG:51 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

The 74LVC162245ADGG:51 belongs to Nexperia's LVC logic family-designed specifically for low-voltage, high-noise-immunity digital interfacing in space-constrained, thermally demanding applications.

FAQ

What is the maximum supply voltage for the 74LVC162245ADGG:51?

The absolute maximum supply voltage (VCC) for the 74LVC162245ADGG:51 is +6.5 V, but the recommended operating range is strictly 1.2 V to 3.6 V. Operating outside this range may cause functional failure or accelerated wear. The device maintains 5.5 V tolerance on I/O pins even when VCC is as low as 1.2 V, enabling robust mixed-voltage interfacing without violating internal oxide limits.

Does the 74LVC162245ADGG:51 support bus hold functionality?

No, the 74LVC162245ADGG:51 does not include bus hold circuitry on its data inputs. Bus hold is exclusive to the 74LVCH162245A variant. This means unused inputs on the 74LVC162245ADGG:51 must be externally terminated with pull-up or pull-down resistors to prevent floating states and potential shoot-through current. The absence of bus hold reduces input leakage and simplifies biasing in controlled environments.

Can the 74LVC162245ADGG:51 be used as a level shifter between 3.3 V and 5 V logic domains?

Yes, the 74LVC162245ADGG:51 functions as a bidirectional level shifter: its inputs accept 0–5.5 V regardless of VCC (1.2–3.6 V), and outputs swing rail-to-rail within the VCC range. When VCC = 3.3 V, it safely drives 3.3 V logic while receiving 5 V signals-no external components needed. However, it cannot translate 5 V outputs to 3.3 V inputs on the same pin; direction control (nDIR) must be managed to avoid contention.

What is the thermal performance of the 74LVC162245ADGG:51 in TSSOP48 package?

The 74LVC162245ADGG:51 in TSSOP48 (SOT362-1) has a specified operating ambient temperature range of −40 °C to +125 °C. Its total power dissipation is rated at 500 mW maximum, derating linearly above 60 °C at 5.5 mW/K. Thermal resistance (θJA) is approximately 85 °C/W, meaning at 100 mW dissipation and 85 °C ambient, junction temperature reaches ~93.5 °C-well within safe limits for continuous industrial operation.

How does the 30 Ω series termination in the 74LVC162245ADGG:51 improve signal integrity?

The 30 Ω series termination resistors in the 74LVC162245ADGG:51 are placed inside each output driver stage to match typical PCB trace impedances (45–65 Ω). This damps reflections at the source, reducing overshoot, undershoot, and ringing-especially on traces longer than 5 cm. Measured results show >40% reduction in edge distortion versus non-terminated equivalents, directly improving timing margin and noise immunity in 25–50 MHz parallel buses.