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PDF 74FR245SC Data sheet ( Hoja de datos )
| Número de pieza | 74FR245SC | |
| Descripción | Octal Bidirectional Transceiver with 3-STATE Outputs | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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August 1990
Revised August 1999
74FR245
Octal Bidirectional Transceiver with 3-STATE Outputs
General Description
The 74FR245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus-ori-
ented applications. Current sinking capability is 64 mA on
both the A and B Ports. The Transmit/Receive (T/R) input
determines the direction of data flow through the bidirec-
tional 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 Z condition.
Features
s Non-inverting buffers
s Bidirectional data path
s A and B output sink capability of 64 mA, source
capability of 15 mA
s Guaranteed pin-to-pin skew
Ordering Code:
Order Number Package Number
Package Description
74FR245SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74FR245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74FR245PC
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
OE
T/R
A0–A7
B0–B7
Description
Output Enable Input (Active-LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Truth Table
Inputs
OE T/R
LL
LH
HX
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Output
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
© 1999 Fairchild Semiconductor Corporation DS010887
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet 74FR245SC.PDF ] | |
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