D Qualified for Automotive Applications
D Wide Operating Voltage Range of 2 V to 6 V
D High-Current 3-State Outputs Drive Bus
Lines Directly or up to 15 LSTTL Loads
D Low Power Consumption, 80-µA Max ICC
D Typical tpd = 21 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Bus-Structured Pinout
OCTAL TRANSPARENT DĆTYPE LATCH
WITH 3ĆSTATE OUTPUTS
SCLS600A − NOVEMBER 2004 − REVISED APRIL 2008
DW OR PW PACKAGE
This octal transparent D-type 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.
While the latch-enable (LE) input is high, the Q outputs respond to the data (D) inputs. When LE is low, the
outputs are latched to retain the data that was set up.
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 the high-impedance state. 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 interface or pullup components.
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.
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 in the high-impedance state.
SOIC − DW
−40°C to 125°C
TSSOP − PW
Reel of 2500
Reel of 2000
† For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI web site at http://www.ti.com.
‡ Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
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.
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.
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