74ALVCH16501DGG118

Overview

The NXP USA Inc. 74ALVCH16501DGG118 is an 18-bit universal bus transceiver featuring bus hold inputs and 3-state outputs, housed in a TSSOP56 (SOT364-1) package. It operates within a supply voltage range of 1.2 V to 3.6 V and supports temperatures from -40 °C to +85 °C. The device provides ±24 mA current drive at 3.0 V and includes IOFF circuitry for partial power-down applications. Propagation delay ranges from 1.0 ns to 6.3 ns depending on the control signal and voltage.

Feature Summary

• Universal bus transceiver with D-type latches and flip-flops supporting transparent, latched, or clocked modes
• Bus hold functionality on all data inputs to maintain stable logic levels
• IOFF circuitry prevents damaging backflow currents during partial power-down states
• Complementary output enables allow independent control of A-to-B and B-to-A data flow

Applications

• Bus-oriented applications requiring 3-state non-inverting outputs
• Systems utilizing 50 Ω transmission lines
• Partial power-down environments requiring backflow current protection

Procurement Notes

Verify the specific ordering suffix '118' against official Nexperia documentation to confirm tape-and-reel packaging specifications. Ensure the component meets RoHS compliance requirements for your region. Confirm that the TSSOP56 package dimensions align with your PCB footprint design rules before finalizing procurement.

Selection Notes

Select this component when designing systems requiring high-density 18-bit data transfer with flexible mode control. It is suitable for mixed-voltage interfaces due to direct TTL level compatibility. Consider its low power dissipation and wide operating voltage range for battery-powered or energy-efficient designs.

Part Context

This device belongs to the 74ALVCH family of CMOS logic products. It serves as a universal transceiver capable of handling complex data routing tasks. The ALVCH series is designed for low voltage applications while maintaining performance comparable to higher voltage counterparts.

Replacement Considerations

Direct substitutes include the SN74ALVCH16501DGGR from Texas Instruments and the 74ALVCH16501DGGY from Nexperia. Verify pinout compatibility and electrical characteristics before substitution.

FAQ

How does the IOFF feature function?

The IOFF circuitry disables the outputs to prevent potentially damaging backflow current through the device when it is powered down.

What controls the data flow direction?

Data flow is controlled by output enable (OEAB/OEBA), latch enable (LEAB/LEBA), and clock (CPAB/CPBA) inputs.