74ALVCH16500DGG:11

Overview

The Nexperia 74ALVCH16500DGG:11 is an 18-bit universal bus transceiver with 3-state outputs, housed in a 56-lead TSSOP package (SOT364-1). It operates within a supply voltage range of 1.65 V to 3.6 V and supports direct interface with TTL levels from 2.7 V to 3.6 V. The device features independent A-to-B and B-to-A data flow control via complementary output enables (OEAB active HIGH, OEBA active LOW), latch enables (LEAB/LEBA), and clock inputs (CPAB/CPBA). Propagation delay ranges from 1.0 ns to 5.5 ns depending on voltage and load conditions.

Feature Summary

• Supports partial power-down applications using IOFF circuitry to prevent damaging backflow current
• Features MULTIBYTE™ flow-through standard pin-out architecture for simplified PCB routing
• Includes bus hold functionality on data inputs to maintain valid logic levels
• Provides low inductance multiple VCC and GND pins to minimize noise and ground bounce

Applications

• High-speed parallel data transmission systems
• Memory bus interfacing requiring latched data storage
• Mixed-signal environments utilizing 3.3 V or 5 V logic families
• Industrial control systems operating at -40 °C to +85 °C

Procurement Notes

Verify the specific ordering suffix :11 against official Nexperia documentation to confirm reel specifications and tape-and-reel dimensions. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Confirm that the TSSOP56 package variant matches the required footprint for the target PCB design before finalizing orders.

Selection Notes

Select this component when designing circuits requiring simultaneous bidirectional data transfer with independent latching capabilities for each direction. The device is suitable for applications needing robust ESD protection exceeding 2000 V HBM and high noise immunity. Consider the 56-pin TSSOP package constraints and ensure adequate thermal management for total power dissipation limits up to 500 mW.

Part Context

This part belongs to the Nexperia ALVCH logic family, which utilizes Advanced Low-Voltage CMOS technology. The 74ALVCH16500 serves as a universal transceiver, distinct from simple level shifters by incorporating flip-flop latches controlled by dedicated clock signals. It is designed for high-density digital interfaces where signal integrity and speed are critical.

Replacement Considerations

Direct replacements include other 18-bit universal bus transceivers from the same ALVCH family, such as the 74ALVCH16500 without the specific :11 suffix if packaging requirements differ. Verify pin compatibility and electrical characteristics against the original datasheet before substituting.