74ALVCH16600DGGS

Overview

The Nexperia 74ALVCH16600DGGS 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 ambient temperatures from -40 °C to +85 °C. The device features MULTIBYTE™ flow-through architecture, bus hold inputs, and IOFF circuitry for partial power-down applications. It provides current drive of ±24 mA at 3.0 V and complies with JEDEC standards JESD8-7, JESD8-5, and JESD8C.

Feature Summary

• Supports partial power-down applications through integrated IOFF circuitry that disables outputs to prevent damaging backflow currents.
• Features bus hold functionality on data inputs to maintain stable logic states during transitions or floating conditions.
• Utilizes low inductance multiple VCC and GND pins designed to minimize noise and ground bounce effects.

Applications

• Partial power-down system configurations requiring safe isolation during power state changes
• High-speed bidirectional data transfer between buses operating at different voltage levels
• Systems interfacing directly with TTL logic levels within the specified voltage range

Procurement Notes

Verify the specific ordering suffix DGGS corresponds to the TSSOP56 plastic thin shrink small outline package with 56 leads. Confirm the temperature range matches the required operational environment of -40 °C to +85 °C. Ensure compatibility with the intended supply voltage range of 1.65 V to 3.6 V before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring 18-bit wide data paths with independent direction control. The MULTIBYTE™ architecture allows efficient data handling compared to standard transceivers. Consider the low power dissipation characteristics and high ESD protection ratings for robust operation in noisy environments.

Part Context

This device belongs to the ALVCH logic family, characterized by advanced low-voltage CMOS technology. It serves as a universal transceiver solution, combining latch capabilities with bus driving functions. The part integrates clock enable and latch enable controls for precise data synchronization across the 18 channels.

Replacement Considerations

Consult official Nexperia documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications to ensure functional equivalence without modifying the existing board layout or control logic.

FAQ

How does the IOFF circuitry function during partial power-down?

The IOFF circuitry automatically disables the outputs when the device is powered down, preventing potentially damaging backflow current from flowing through the device into the unpowered section.

What is the purpose of the bus hold feature?

Bus hold inputs maintain the last known logic state of the data lines, ensuring stable output levels even if the input signals are floating or transitioning slowly.