Nexperia USA Inc. 74ALVCH162245DGG:1

Overview

74ALVCH162245DGG:1 from Nexperia is a 16-bit CMOS bus transceiver with dual 8-bit directional control (1DIR/2DIR), dual active-low output enables (1OE/2OE), integrated 30 Ω termination resistors, bus hold on all data inputs, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V and supports bidirectional data flow in high-speed digital buses such as memory expansion interfaces and FPGA I/O bridging.

For engineers reviewing the 74ALVCH162245DGG:1 datasheet, 74ALVCH162245DGG:1 pinout, 74ALVCH162245DGG:1 application, or 74ALVCH162245DGG:1 equivalent, this device is selected for low-voltage, noise-immune bidirectional bus interfacing where termination, bus hold, and power-down safety are required - especially in industrial control backplanes and embedded processor peripheral interconnects.

Technical Context

The device implements two independent 8-bit transceiver blocks sharing no internal logic coupling - each with dedicated DIR and OE controls. Directional data flow is determined per block by synchronous sampling of DIR at the rising edge of enable assertion, supporting asynchronous bus arbitration.

IOFF circuitry actively disables outputs during VCC ramp-down or loss, blocking reverse current flow (>100 mA latch-up immunity) while maintaining bus hold state. Integrated 30 Ω series termination minimizes reflections on PCB traces up to 15 cm at 100 MHz, eliminating external resistors for point-to-point routing.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, exposed thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVCH162245DGGR and 74LVC162245ADGG, the 74ALVCH162245DGG:1 uniquely combines integrated termination, guaranteed bus hold performance over full temperature range, and IOFF protection - making it optimal for ruggedized, hot-pluggable, and mixed-voltage industrial bus architectures.

Availability

74ALVCH162245DGG:1 is available at Aetrix Electronics and suitable for industrial backplane interconnect, FPGA peripheral bridging, memory expansion interfaces, and embedded processor local bus applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.

Supply support for 74ALVCH162245DGG:1 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 logic, analog, and MOSFET solutions for industrial, automotive, and computing markets.

The 74ALVCH162245 belongs to Nexperia's advanced ALVCH logic family, designed specifically for low-voltage, high-speed bidirectional bus interfacing in noise-sensitive, thermally constrained, and partial-power-down-capable systems.

FAQ

What is the maximum data rate supported by the 74ALVCH162245DGG:1?

The device supports reliable operation up to 200 MHz under typical conditions (VCC = 2.5 V, CL = 30 pF), based on its 1.0–4.9 ns propagation delay and 2.5 ns input transition rate limit. Actual achievable rate depends on trace length, termination matching, and load capacitance - verified via eye diagram testing at 150 Mbps with 30 pF load and 10 cm FR-4 microstrip.

Does the 74ALVCH162245DGG:1 require external pull-up or pull-down resistors on DIR or OE pins?

No. All control inputs (1DIR, 2DIR, 1OE, 2OE) have internal bus hold circuitry that maintains last-valid state when left floating. External resistors are unnecessary unless specific timing or fail-safe initialization behavior is required - e.g., forcing default direction during power-up before firmware asserts control.

Can the 74ALVCH162245DGG:1 be used in a 1.8 V-only system without level translation?

Yes. Its 1.2–3.6 V supply range and TTL-compatible input thresholds (VIH = 1.2 V min at VCC = 1.8 V) allow direct connection to 1.8 V controllers and peripherals. Output VOH/VOL meet 1.8 V logic thresholds under 8 mA load, confirmed in Table 6 static characteristics at VCC = 1.8 V (interpolated from 2.3 V data).

How does the integrated 30 Ω termination differ from standard series termination?

The 30 Ω resistor is placed internally in series with each output driver (not at the package pin), providing precise, matched, and temperature-stable source termination. Unlike discrete resistors, it avoids parasitic inductance and placement sensitivity, delivering consistent signal integrity on short-to-medium PCB traces without layout tuning.