IDTQS74FCT2245T Datasheet, PDF (1/6 Pages) Integrated Device Technology – HIGH-SPEED CMOS 8-BIT TRANSCEIVER

IDTQS74FCT2245T/AT/CT
HIGH-SPEED CMOS 8-BIT TRANSCEIVER
HIGH-SPEED CMOS
8-BIT TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
IDTQS74FCT2245T/AT/CT
FEATURES:
• CMOS power levels: <7.5mW static
• Undershoot clamp diodes on all inputs
• True TTL input and output compatibility
• Ground bounce controlled outputs
• Reduced output swing of 0 to 3.5V
• Built-in 25Ω series resistor outputs reduce reflection and other
system noise
• Std., A, and C speed grades with 4.1ns tPD for C
• IOL = 12mA
• Available in SOIC and QSOP packages
DESCRIPTION:
The IDTQS74FCT2245T is an 8-bit non-inverting transceiver that has
three-state outputs, ideal for bus-oriented applications. The Transmit/
Receive (T/R) input determines the direction of data flow, either from A to
B or B to A, and the Output Enable (OE) input enables the selected port for
output. The QS74FCT2245 has a 25Ω resistor output that is useful for
driving transmission lines and reducing system noise. The QS74FCT2245
parts can replace the 245 series to reduce noise in an existing design. All
inputs have clamp diodes for undershoot noise suppression. All outputs
have ground bounce suppression. Outputs will not load an active bus when
Vcc is removed from the device.
FUNCTIONAL BLOCK DIAGRAM
T/R
OE
25Ω
Ax
25Ω
Bx
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2000 Integrated Device Technology, Inc.
DECEMBER 2000
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