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74ACT11543DWRE4 データシート(PDF) 1 Page - Texas Instruments |
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74ACT11543DWRE4 データシート(HTML) 1 Page - Texas Instruments |
1 / 12 page 74ACT11543 OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS SCAS136 – D3608, JULY 1990 – REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Copyright © 1993, Texas Instruments Incorporated 2–1 • Inputs Are TTL-Voltage Compatible • 3-State True Outputs • Back-to-Back Registers for Storage • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configurations Minimize High-Speed Switching Noise • EPICt (Enhanced-Performance Implanted CMOS) 1- mm Process • 500-mA Typical Latch-Up Immunity at 125°C description This 8-bit registered transceiver contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate latch enable (LEAB or LEBA) and output enable (GAB or GBA) inputs are provided for each register to permit independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low in order to enter data from A or to output data to B. Having CEAB low and LEAB low makes the A-to-B latches transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With CEAB and GAB both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B-to-A is similar, but requires the use of CEBA, LEBA, and GBA inputs. The 74ACT11543 is characterized for operation from – 40 °C to 85°C. FUNCTION TABLE INPUTS LATCH STATUS OUTPUT BUFFERS CEAB LEAB GAB STATUS A TO B† B1 THRU B8 H X X Storing Z X H Storing X H Z L L L Transparent Current A Data L H L Storing Previous} A Data † A-to-B data flow is shown: B-to-A flow control is the same except uses CEBA, LEBA, and GBA. ‡ Data present before low-to-high transition of LEAB. DW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CEBA A1 A2 A3 A4 GND GND GND GND A5 A6 A7 A8 CEAB GBA LEBA B1 B2 B3 B4 VCC VCC B5 B6 B7 B8 LEAB GAB 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. |
同様の部品番号 - 74ACT11543DWRE4 |
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同様の説明 - 74ACT11543DWRE4 |
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