SN74ABT543A Datasheet | Texas Instruments

description SN54ABT543A . . . JT OR W PACKAGE SN74ABT543A . . . DB, DW, NT, OR PW PACKAGE (TOP VIEW) LEBA 1 OEBA 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 A8 10 CEAB 11 GND 12 24 VCC 23 CEBA 22 B1 21 B2 20 B3 19 B4 18 B5 17 B6 16 B7 15 B8 14 LEAB 13 OEAB The ’ABT543A octal transceivers contain two sets of D-type latches for temporary storage of data flowing in either direction. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) 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 to enter data from A or to output data from B. If CEAB is low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With CEAB and OEAB 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 using the CEBA, LEBA, and OEBA inputs. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. SN54ABT543A . . . FK PACKAGE (TOP VIEW) A1 OEBA LEBA NC VCC CEBA B1 4 3 2 1 28 27 26 A2 5 25 B2 A3 6 24 B3 A4 7 23 B4 NC 8 22 NC A5 9 21 B5 A6 10 20 B6 A7 11 19 B7 12 13 14 15 16 17 18 A8 CEAB GND NC OEAB LEAB B8 - No internal connection The SN54ABT543A is characterized for operation over the full military temperature range of - 55°C to 125°C. The SN74ABT543A is characterized for operation from - 40°C to 85°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EPIC-ΙΙB is a trademark of Texas Instruments Incorporated. PRODUCTION DATA information is current as of publication...