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IDTQS74FCT2245TSO中文资料

INDUSTRIAL T EMPERATURE R ANGE

IDTQS74FCT2245T/AT/CT

HIGH-SPEED CMOS 8-BIT TRANSCEIVER

1

DECEMBER 2000

INDUSTRIAL TEMPERATURE RANGE

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

© 2000 Integrated Device Technology, Inc.

DSC-5404/3

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 t PD for C •I OL = 12mA

IDTQS74FCT2245TSO中文资料

•Available in SOIC and QSOP packages FUNCTIONAL BLOCK DIAGRAM

IDTQS74FCT2245T/AT/CT

HIGH-SPEED CMOS 8-BIT TRANSCEIVER

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 fo
r driving transmission lines and reducing system noise. The QS74FCT2245parts 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.

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 QS74FCT2245parts 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.

T/R

Ax

Bx

OE

25Ω

25Ω

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