SN74ALVCH16501DGGR

Overview

The SN74ALVCH16501DGGR is an 18-bit universal bus transceiver from the Texas Instruments ALVCH logic family, housed in a 56-pin TSSOP package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports data rates up to 150 MHz. The device features 3-state outputs with ±24 mA drive capability at 3.3 V. Propagation delay (tpd) is typically 3.9 ns at 3.3 V. It integrates active bus-hold circuitry on data inputs to maintain valid logic states without external resistors.

Feature Summary

• Combines D-type latches and flip-flops for transparent, latched, or clocked operation modes
• Active bus-hold circuitry maintains valid logic states on unused or undriven inputs
• ESD protection exceeds 2000-V human-body model and 200-V machine model standards

Applications

• High-density memory mapping systems
• Clock distribution networks
• Bus-oriented architectures requiring bidirectional data transfer

Procurement Notes

Verify the specific ordering suffix 'DGGR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer's documentation. Ensure the operating temperature range aligns with the system's thermal design requirements.

Selection Notes

Select this component when designing systems requiring 18-bit wide data paths with flexible control over data flow direction and storage. The ALVCH technology provides low power consumption suitable for battery-operated devices. Verify that the 3.6 V maximum supply voltage matches the target system's power rails.

Part Context

This device belongs to the Texas Instruments Widebus family of universal bus transceivers. It is designed to interface between microprocessors and peripheral devices, offering high-speed data transfer capabilities across multiple channels simultaneously while maintaining signal integrity through controlled output impedance.

Replacement Considerations

SN74ALVCH16501DLR

FAQ

How does the device handle unused data inputs?

The SN74ALVCH16501DGGR includes active bus-hold circuitry on all data inputs, which holds unused or undriven lines at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What controls the data flow direction?

Data flow direction is controlled by complementary output-enable inputs (OEAB and OEBA). When OEAB is high, data flows from A to B; when OEBA is low, data flows from B to A.