SN74ALVC162334DGGR

Universal Bus Functions Overview

The SN74ALVC162334DGGR is a 16-bit universal bus driver with 3-state outputs from the Texas Instruments Widebus family. It operates from 1.65 V to 3.6 V and features a maximum propagation delay of 3.8 ns at 3.3 V. The device provides ±12-mA output drive capability and includes equivalent 26-Ω series resistors in the output ports to reduce overshoot and undershoot without requiring external components. Designed for PC100 register DIMM applications, it complies with JEDEC 168-pin and 200-pin SDRAM buffered DIMM specifications. It offers latch-up performance exceeding 250 mA per JESD 17 and ESD protection exceeding JESD 22 standards.

Universal Bus Functions Feature Summary

• Integrated 26-ohm series resistors in output ports eliminate the need for external resistors to manage signal integrity.
• Transparent mode operation when latch-enable input is low, allowing direct data flow from A to Y inputs.
• Data latching occurs on the low-to-high transition of the clock input when latch-enable is high.
• Outputs enter a high-impedance state when the output-enable input is high.

Universal Bus Functions Applications

• PC100 Register DIMMs
• JEDEC 168-pin SDRAM buffered DIMMs
• JEDEC 200-pin SDRAM buffered DIMMs

Universal Bus Functions Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the DGGR suffix indicates a TSSOP package. Confirm RoHS compliance status and moisture sensitivity level ratings before integration into the manufacturing process. Ensure all unused inputs are tied to VCC or GND to maintain proper device operation and prevent undefined states during power cycles.

Universal Bus Functions Selection Notes

Select this component for designs requiring 16-bit data buffering with integrated termination resistors. It is suitable for systems operating within the 1.65-V to 3.6-V voltage range. Consider the 3.8-ns maximum propagation delay for timing constraints. Verify compatibility with JEDEC SDRAM buffered DIMM specifications if used in memory subsystems.

Universal Bus Functions Part Context

This device belongs to the Texas Instruments Widebus family, which specializes in high-density bus drivers. The SN74ALVC162334 variant specifically addresses the needs of modern memory architectures by combining 16-bit width with built-in series resistance. It serves as a critical interface component between system controllers and memory modules.

Universal Bus Functions Replacement Considerations

Direct substitutes include other members of the ALVC162334 family such as SN74ALVC162334DLR (SSOP) or SN74ALVC162334DGVR (TVSOP), provided the package footprint is compatible. Cross-family replacements require verification of pinout and electrical characteristics against the original design requirements.

Universal Bus Functions FAQ

How does the device handle data latching?

When the latch-enable (LE) input is high, the A data is stored in the latch/flip-flop on the low-to-high transition of the CLK input.

What is the purpose of the internal series resistors?

The equivalent 26-Ω resistors in the output ports are designed to reduce overshoot and undershoot, eliminating the need for external resistors.