74ALVCH162601DGG,1

Overview

The Nexperia 74ALVCH162601DGG,1 is an 18-bit universal bus transceiver featuring integrated 30 Ω termination resistors and 3-state outputs. It operates within a supply voltage range of 1.65 V to 3.6 V and supports data flow control via OEAB/OEBA, LEAB/LEBA, CEAB/CEBA, and CPAB/CPBA inputs. The device includes bus hold inputs, IOFF circuitry for partial power-down applications, and low-inductance multiple VCC/GND pins. It complies with JEDEC standards JESD8-7, JESD8-5, and JESD8B/JESD36, and offers ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

Feature Summary

• Integrated 30 Ω termination resistors on all data lines.
• MULTIBYTE™ flow-through standard pin-out architecture.
• Bus hold functionality on data inputs.
• IOFF circuitry prevents damaging backflow current during partial power-down.

Applications

• High-speed parallel bus interfaces requiring controlled impedance.
• Memory systems utilizing universal bus transceivers.
• Mixed-voltage logic interfacing with TTL level compatibility.

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when designing 18-bit wide data paths that require integrated termination to minimize reflections without external components. The MULTIBYTE™ architecture simplifies PCB layout by maintaining standard pin-outs. Ensure the application environment stays within the -40 °C to +85 °C temperature range and utilizes the specified control signals for transparent or latched operation modes.

Part Context

This device belongs to the ALVCH logic family, designed for low-voltage CMOS applications. It provides high-speed performance suitable for modern digital systems while maintaining compatibility with traditional TTL levels. The inclusion of termination resistors distinguishes it from standard transceivers, addressing signal integrity challenges in dense packaging environments like the TSSOP56 package.

Replacement Considerations

Direct replacements must match the 18-bit width, 30 Ω termination integration, and TSSOP56 package. Verify control logic polarity (active LOW/HIGH) matches existing designs. Cross-reference with other 74ALVCH16-series devices if termination requirements differ.

FAQ

How does the IOFF circuitry function?

The IOFF circuitry disables the outputs when the device is powered down, preventing potentially damaging backflow current through the device.

What controls the direction of data flow?

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