54ACT16952, 74ACT16952
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS

SCAS159C - JANUARY 1991 - REVISED APRIL 1996

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

features

• Members of the Texas Instruments Widebus^TM Family
• Inputs Are TTL-Voltage Compatible
• Noninverting Outputs
• Two 16-Bit, Back-to-Back Registers Store Data Flowing in Both Directions
• Flow-Through Architecture Optimizes PCB Layout
• Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
• EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
• 500-mA Typical Latch-Up Immunity at 125°C
• Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Packages Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

description

The 'ACT16952 are 16-bit registered transceivers that contain two sets of D-type flip-flops for temporary storage of data flowing in either direction. They can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is stored in registers on the low-to-high transition of the clock (CLKAB or CLKBA) input, provided that the clock-enable ( or ) input is low. Taking the output-enable ( or ) input low accesses the data on either port. To avoid false clocking of the flip-flops, (or ) should not be switched from low to high while CLKAB (or CLKBA) is low.

The 74ACT16952 is packaged in TI's shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The 54ACT16952 is characterized for operation over the full military temperature range of -55°C to 125°C. The 74ACT16952 is characterized for operation from -40°C to 85°C.