SN74ALVCH16903DL

Overview

The SN74ALVCH16903DL is a 3.3-V, 12-bit universal bus driver featuring parity checking and dual 3-state outputs. It operates within a supply voltage range of 2.3 V to 3.6 V and supports clock frequencies up to 125 MHz. The device utilizes an EPIC submicron process and includes active bus-hold circuitry on data inputs. It provides high-impedance states for bus isolation and features ESD protection exceeding 2000 V per MIL-STD-883. The component is housed in a 56-pin SSOP (DL) package.

Feature Summary

• Supports buffer or edge-triggered register modes via MODE input selection
• Includes integrated parity checker with open-drain YERR output
• Features active bus-hold circuitry to eliminate external pullup/pulldown resistors
• Provides dual 3-state outputs controlled by buffered OE input

Applications

• High-speed data bus drivers requiring parity verification
• Cascaded logic systems utilizing PARI/O for extended parity sums
• Edge-triggered register applications with clock enable control

Procurement Notes

Verify the specific ordering suffix against the latest Texas Instruments Package Option Addendum to confirm material type, lead finish, and moisture sensitivity level. Ensure the selected variant matches the required operating temperature range and packaging quantity. Confirm RoHS compliance status directly from the manufacturer's documentation prior to procurement.

Selection Notes

Select this component when designing 3.3-V logic interfaces requiring simultaneous buffering and parity error detection. The dual-output architecture allows flexible routing for 12-bit wide buses. Consider the EPIC process technology for enhanced performance and latch-up immunity compared to standard CMOS alternatives. Evaluate the need for cascading capabilities if system-wide parity monitoring is required.

Part Context

This device belongs to the Texas Instruments Widebus family, designed for high-density logic applications. It complements other ALVCH series components by providing specialized functionality for data integrity through built-in parity checking. The DL package offers a compact footprint suitable for space-constrained printed circuit board layouts.

Replacement Considerations

Direct substitutes include the SN74ALVCH16903DL.B variant, which shares identical electrical characteristics and pinout configuration.