SN74ABT843DBR ,9-Bit Bus-Interface D-Type Latches With 3-State Outputs SN54ABT843, SN74ABT843 9-BIT BUS-INTERFACE D-TYPE LATCHESWITH 3-STATE OUTPUTSSCBS197D – FEBRUARY 1 ..
SN74ABT843DWR ,9-Bit Bus-Interface D-Type Latches With 3-State Outputsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..
SN74ABT853DBLE ,8-Bit To 9-Bit Parity Bus TransceiversSN54ABT853, SN74ABT8538-BIT TO 9-BIT PARITY BUS TRANSCEIVERSSCBS198G − FEBRUARY 1991 − REVISED OCTO ..
SN74ABT8543DL ,Scan Test Devices With Octal Registered Bus TransceiversSN54ABT8543, SN74ABT8543 SCAN TEST DEVICES WITHOCTAL REGISTERED BUS TRANSCEIVERSSCBS120E – AUGUST 1 ..
SN74ABT861NT , 10-BIT TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74ABT863DWR ,9-Bit Bus Transceivers With 3-State OutputsSN54ABT863, SN74ABT863 9-BIT BUS TRANSCEIVERSWITH 3-STATE OUTPUTSSCBS201E – FEBRUARY 1991 – REVISED ..
SN74LS161A ,Synchronous 4-Bit Binary Counters
SN74LS161A ,Synchronous 4-Bit Binary Counters
SN74LS161ADR ,Synchronous 4-Bit Binary Counters
SN74LS161ADR2 , BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERSSN54/74LS160ASN54/74LS161ASN54/74LS162ABCD DECADE COUNTERS/SN54/74LS163A4-BIT BINARY COUNTERSThe LS ..
SN74LS161AML1 , BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERSSN54/74LS160ASN54/74LS161ASN54/74LS162ABCD DECADE COUNTERS/SN54/74LS163A4-BIT BINARY COUNTERSThe LS ..
SN74LS161AMR1 , BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERSSN54/74LS160ASN54/74LS161ASN54/74LS162ABCD DECADE COUNTERS/SN54/74LS163A4-BIT BINARY COUNTERSThe LS ..
SN74ABT843DBR-SN74ABT843DWR
9-Bit Bus-Interface D-Type Latches With 3-State Outputs
at VCC = 5 V, TA = 25°C High-Drive Outputs (–32-mA IOH, 64-mA IOL) Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, Ceramic Chip
Carriers (FK), Ceramic Flat (W) Package,
and Plastic (NT) and Ceramic (JT) DIPs
descriptionThe ’ABT843 9-bit latches are designed
specifically for driving highly capacitive or
relatively low-impedance loads. They are
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The nine transparent D-type latches provide true
data at the outputs.
A buffered output-enable (OE) input can be used
to place the nine outputs in either a normal logic
state (high or low logic levels) or a
high-impedance state. The outputs are also in the
high-impedance state during power-up and
power-down conditions. The outputs remain in the
high-impedance state while the device is powered
down. In the high-impedance state, the outputs
neither load nor drive the bus lines significantly.
The high-impedance state and increased drive
provide the capability to drive bus lines without
need for interface or pullup components.
OE does not affect the internal operations of the latch. Previously stored data can be retained or new data can
be entered while the outputs are in the high-impedance state.
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.
The SN54ABT843 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74ABT843 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.
SN54ABT843... FK PACKAGE
(TOP VIEW)CLR
GND
PRE
CLR
GND
PRE1DOENC 1Q2Q
NC – No internal connection
