SN64BCT373 Datasheet | Texas Instruments

description This 8-bit latch features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight latches of the SN64BCT373 are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When the enable is taken low, the Q outputs are latched at the levels that were set up at the D inputs. A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state the outputs neither load nor drive the bus lines significantly. The high-impedance impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup ponents. The output-enable (OE) does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are off. The outputs are in a high-impedance state during power up and power down while the supply voltage is less than approximately 3 V. The SN64BCT373 is characterized for operation from - 40°C to 85°C and 0°C to 70°C. FUNCTION TABLE (each latch) INPUTS OE LE OUTPUT Q L HH LLX HXX Q0 Z 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. Copyright  1994, Texas Instruments Incorporated - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 - POST OFFICE BOX 1443 HOUSTON, TEXAS 77251- 1443 SN64BCT373 OCTAL TRANSPARENT DĆTYPE LATCH WITH 3ĆSTATE OUTPUTS SCBS065A - JUNE 1990 - REVISED JANUARY 1994 logic symbol† 1 OE 11 LE 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D EN...