SN74LVTH543-EP
SN74LVTH543-EP is 3.3-V ABT OCTAL REGISTERED TRANSCEIVERS manufactured by Texas Instruments.
description
/ordering information
This octal transceiver is designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
The SN74LVTH543 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 (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.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not remended.
ORDERING INFORMATION
PACKAGE‡
ORDERABLE PART NUMBER
TOP-SIDE MARKING
- 40°C to 85°C TSSOP
- PW Tape and reel SN74LVTH543IPWREP LH543EP ‡ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at .ti./sc/package.
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