D Function and Pinout Compatible With the
Fastest Bipolar Logic
D 25-Ω Output Series Resistors Reduce
Transmission-Line Reflection Noise
D Reduced VOH (Typically = 3.3 V) Version of
Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
D Ioff Supports Partial-Power-Down Mode
D Matched Rise and Fall Times
D 3-State Outputs
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Fully Compatible With TTL Input and
Output Logic Levels
D 12-mA Output Sink Current
15-mA Output Source Current
WITH 3-STATE OUTPUTS
SCCS039B – SEPTEMBER 1994 – REVISED OCTOBER 2001
Q OR SO PACKAGE
The CY74FCT2373T is an 8-bit, high-speed CMOS, TTL-compatible buffered latch with 3-state outputs that is
ideal for driving high-capacitance loads, such as memory and address buffers. On-chip 25-Ω termination
resistors at the outputs reduce system noise caused by reflections. The CY74FCT2373T can replace the
CY74FCT373T to reduce noise in an existing design.
When the latch-enable (LE) input is high, the flip-flops appear transparent to the data. Data that meets the
required setup times are latched when LE transitions from high to low. Data appears on the bus when the
output-enable (OE) input is low. When OE is high, the bus output is in the high-impedance state. In this mode,
data can be entered into the latches.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
QSOP – Q Tape and reel
SOIC – SO
–40°C to 85°C
Tape and reel 4.7 CY74FCT2373CTSOCT
QSOP – Q Tape and reel 5.2 CY74FCT2373ATQCT FCT2373A
QSOP – Q Tape and reel 8 CY74FCT2373TQCT FCT2373
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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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