Octal Transparent D-Type Latch
Description
• State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
• ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
• High-Impedance State During Power Up and
Power Down
• 3-State True Outputs Drive Bus Lines or
Buffer-Memory Address Registers
• Full Parallel Access for Loading • Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
SN64BCT373 OCTAL TRANSPARENT DĆTYPE LATCH
WITH 3ĆSTATE OUTPUTS
SCBS065A − JUNE 1990 − REVISED JANUARY 1994
DW OR N PACKAGE (TOP VIEW)
OE 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND
1 2 3 4 5 6 7 8 9 10
20 VCC 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 5Q 11 LE
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 components.
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 (...
Similar Datasheet
