74LVX245CW 查看數據表（PDF） - Fairchild Semiconductor
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74LVX245CW Datasheet PDF : 5 Pages
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April 1993
Revised March 1999
74LVX245
Low Voltage Octal Bidirectional Transceiver
General Description
The LVX245 contains eight non-inverting bidirectional buff-
ers and is intended for bus-oriented applications. The
Transmit/Receive (T/R) input determines the direction of
data flow through the bidirectional transceiver. Transmit
(active-HIGH) enables data from A Ports to B Ports;
Receive (active-LOW) enables data from B Ports to A
Ports. The Output Enable input, when HIGH, disables both
A and B Ports by placing them in a high impedance condi-
tion.
Features
s Ideal for low power/low noise 3.3V applications
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
Ordering Code
Order Number Package Number
Package Description
74LVX245M
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
74LVX245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVX245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
Pin Descriptions
Pin
Description
Names
OE Output Enable Input
T/R Transmit/Receive Input
A0–A7 Side A Inputs or 3-STATE Outputs
B0–B7 Side B Inputs or 3-STATE Outputs
Truth Table
Inputs
OE
T/R
L
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
HIGH-Z State
© 1999 Fairchild Semiconductor Corporation DS011597.prf
www.fairchildsemi.com
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