SN54GTL16921, SN74GTL16921
20-BIT FLIP-FLOPS
WITH GTL I/O LEVELS

SCBS313C - JULY 1993 - REVISED JULY 1995

features

• EPIC-IIB^TM (Enhanced-Performance Implanted CMOS) Submicron Process
• Members of the Texas Instruments Widebus^TM Family
• Provide GTL Signals Levels on Both Inputs and Outputs
• Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
• Flow-Through Architecture Optimizes PCB Layout
• Package Options Include Plastic Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages, and Ceramic Flat (WD) Package

  EPIC-IIB and Widebus are trademarks of Texas Instruments Incorporated.

   

description

The ´GTL16921 have 20 single-bit flip-flops, which are designed to provide terminated GTL logic levels.

These devices can be used as one 20-bit flip-flop. The 20 flip-flops are edge-triggered D-type flip-flops. The ´GTL16921 provide true data at the Q outputs on the positive transition of the clock (CLK) input.

The output-enable () input can be used to place the outputs in a high state. The output-
enable input does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54GTL16921 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74GTL16921 is characterized for operation from 0°C to 70°C.