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DM74AS245N Datasheet

  • DM74AS245N

  • Octal Bus Transceiver with 3-STATE Outputs

  • 5頁(yè)

  • FAIRCHILD

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DM74AS245 Octal Bus Transceiver with 3-STATE Outputs
October 1986
Revised February 2000
DM74AS245
Octal Bus Transceiver with 3-STATE Outputs
General Description
This advanced Schottky device contains 8 pairs of
3-STATE logic elements configured as octal bus transceiv-
ers. These circuits are designed for use in memory, micro-
processor systems and in asynchronous bidirectional data
buses. Two way communication between buses is con-
trolled by the (DIR) input. Data transmits either from the A
bus to the B bus or from the B bus to the A bus. Both the
driver and receiver outputs can be disabled via the (G)
enable input which causes outputs to enter the high imped-
ance mode so that the buses are effectively isolated.
Features
s
Advanced oxide-isolated, ion-implanted Schottky
TTL process
s
Non-inverting logic output
s
3-STATE outputs independently controlled on
A and B buses
s
Low output impedance to drive terminated transmission
lines to 133鈩?/div>
s
Switching response specified into 500鈩?50 pF
s
Specified to interface with CMOS at V
OH
=
V
CC
鈭?/div>
2V
s
PNP inputs reduce input loading
s
Switching specifications guaranteed over full
temperature and V
CC
range
Ordering Code:
Order Number
DM74AS245WM
DM74AS245SJ
DM74AS245N
Package Number
M20B
M20D
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
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 鈥淴鈥?to the ordering code.
Connection Diagram
Function Table
Control
Inputs
G
L
L
H
DIR
L
H
X
B Data to A Bus
A Data to B Bus
Hi-Z
Operation
漏 2000 Fairchild Semiconductor Corporation
DS006299
www.fairchildsemi.com

DM74AS245N 產(chǎn)品屬性

  • 18

  • 集成電路 (IC)

  • 邏輯 - 緩沖器，驅(qū)動(dòng)器，接收器，收發(fā)器

  • 74AS

  • 收發(fā)器，非反相

  • 1

  • 8

  • 15mA，48mA

  • 4.5 V ~ 5.5 V

  • 0°C ~ 70°C

  • 通孔

  • 20-DIP（0.300"，7.62mm）

  • 20-DIP

  • 管件

  • 74AS245

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