74ALVCH16500DGG512

Overview

The Nexperia 74ALVCH16500DGG512 is an 18-bit universal bus transceiver with 3-state outputs, housed in a TSSOP56 (SOT364-1) package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports data rates up to 340 MHz at 3.0 V to 3.6 V. The device features independent A-to-B and B-to-A data flow control via complementary output enables (OEAB/OEBA), latch enables (LEAB/LEBA), and clocks (CPAB/CPBA). Propagation delay ranges from 2.9 ns to 5.5 ns depending on voltage. It includes bus hold inputs, IOFF circuitry for partial power-down protection, and meets JEDEC standards for low-voltage CMOS.

Feature Summary

• Supports bidirectional data transfer with independent latching and clocking for each direction
• Includes bus hold functionality on all data inputs to maintain stable states
• Features IOFF circuitry to prevent backflow current during partial power-down conditions
• Designed for direct interface with TTL logic levels when operating between 2.7 V and 3.6 V

Applications

• High-speed memory interfacing in computing systems
• Data buffering and translation between different voltage domains
• Bus driver applications requiring 3-state isolation
• Portable equipment utilizing low-voltage power supplies

Procurement Notes

Verify the specific ordering suffix '512' against official Nexperia documentation to confirm reel size or tape-and-reel specifications. Ensure the required temperature range (-40 °C to +85 °C) aligns with your system environment. Confirm that the TSSOP56 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when designing systems requiring 18-bit wide data paths with independent directional control. It is suitable for mixed-voltage environments due to its wide supply range and TTL compatibility. Consider the propagation delay and power dissipation characteristics relative to your clock frequencies. Ensure adequate decoupling is provided given the multiple VCC and GND pins to minimize ground bounce.

Part Context

This device belongs to the ALVCH family, which utilizes Advanced Low-Voltage CMOS High-Speed Technology. It provides high-speed performance while maintaining low power consumption. The universal transceiver architecture allows flexible configuration as either a standard bus transceiver or a latchable buffer, offering design versatility for complex digital interfaces.

Replacement Considerations

Check for 74ALVCH16500 variants with different packaging or suffixes if lead times are critical. Verify pinout compatibility with existing designs. Ensure substitute parts meet the same electrical specifications regarding propagation delay, drive capability, and operating voltage range.