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74AC11194DW Datasheet(PDF) 1 Page - Texas Instruments |
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74AC11194DW Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page 74AC11194 4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER SCAS093 − NOVEMBER 1989 − REVISED APRIL 1993 Copyright 1993, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • Parallel-to-Serial, Serial-to-Parallel Conversions • Left or Right Shifts • Parallel Synchronous Loading • Direct Overriding Clear • Temporary Data Latching Capability • Flow-Through Architecture to Optimize PCB Layout • Center-Pin V CC and GND Configurations to Minimize High-Speed Switching Noise • EPICt (Enhanced-Performance Implanted CMOS) 1- mm Process • 500-mA Typical Latch-Up Immunity at 125 °C • Package Options Include Plastic Small-Outline Packages, and Standard Plastic 300-mil DIPs description This bidirectional shift register features parallel outputs, right-shift and left-shift serial inputs, operating-mode-control inputs, and a direct overriding clear line. The register has four distinct modes of operation: Parallel (broadside) load Shift right (in the direction QA toward QD) Shift left (in the direction QD toward QA) Inhibit clocking (do nothing). Synchronous parallel loading is accomplished by applying the 4 bits of data and taking both mode control inputs, S0 and S1, high. The data are loaded into the associated flip-flops and appear at the outputs after the positive transition of the clock input. During loading, serial data flow is inhibited. Shift right is accomplished synchronously with the rising edge of the clock pulse when S0 is high and S1 is low. Serial data for this mode is entered at the shift-right data input. When S0 is low and S1 is high, data shifts left synchronously, and new data is entered at the shift-left serial inputs. Clocking of the flip-flop is inhibited when both mode control inputs are low. The 74AC11194 is characterized for operation from − 40 °C to 85°C. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 SR SER QA QB GND GND GND GND QC QD SL SER S0 S1 A B VCC VCC C D CLR CLK DW OR N PACKAGE (TOP VIEW) PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. EPIC is a trademark of Texas Instruments Incorporated. |
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