54ACT11470, 74ACT11470
8-BIT REGISTERED BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS

SCAS207 - D4016, APRIL 1993

features

• Inputs Are TTL-Voltage Compatible
• Flow-Through Architecture Optimizes PCB Layout
• Center-Pin V_CC and GND 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 Small-Outline Packages, Ceramic Chip Carriers, and Standard Ceramic 300-mil DIPs

  EPIC is a trademark of Texas Instruments Incorporated.

   

description

The ´ACT11470 is an 8-bit registered bus transceiver that contains two sets of D-type flip-flops for temporary storage of data flowing in either direction. Separate clock (CLKAB or CLKBA) and output-enable ( or ) inputs are provided for each register to permit independent control in either direction of data flow.

The A-to-B enable () input must be low in order to enter data from A or to output data to B. If both and CLKAB are low, then the B port presents the level of the A port prior to the most recent low-to-high transition of CLKAB. Data flow from B to A is similar, but requires the use of , CLKBA, and inputs.

To avoid false clocking of the flip-flops, and should not be switched from low to high while CLK is low.

The 54ACT11470 is characterized for operation over the full military temperature range of -55°C to 125°C. The 74ACT11470 is characterized for operation from -40°C to 85°C.

^[dagger] A-to-B data flow is shown: B-to-A flow is similar but uses , CLKBA, and .

^[Dagger] Output level before the indicated steady-state input conditions were established.