54ACT16475

54ACT16475, 74ACT16475 18-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS198A – OCTOBER 1990 – REVISED APRIL 1996 D Members of the Texas Instruments Widebus™ Family D Inputs Are TTL-Voltage Compatible D 3-State Inverting Outputs D Flow-Through Architecture Optimizes PCB Layout D Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise D EPIC™ (Enhanced-Performance Implanted CMOS) 1-µm Process D 500-mA Typical Latch-Up Immunity at 125°C D Packaged in 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 description The ’ACT16475 are 18-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 9-bit transceivers or one 18-bit transceiver. Separate clock (CLKAB and CLKBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow. Data at the A inputs meeting the setup time requirements is transferred to the B outputs on the positive-going edge of CLKAB. With OEAB low, the 3-state B outputs are enabled and reflect the inverted A data. Data flow from B to A is similar but requires the use of the CLKBA and OEBA inputs. 54ACT16475 . . . WD PACKAGE 74ACT16475 . . . DL PACKAGE (TOP VIEW) 1OEAB 1CLKAB 1A1 GND 1A2 1A3 VCC 1A4 1A5 1A6 GND 1A7 1A8 1A9 2A1 2A2...