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Renesas Electronics Components Datasheet

HD74LS245P Datasheet

Octal Bus Transceivers

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HD74LS245
Octal Bus Transceivers (with three-state outputs)
REJ03D0464–0300
Rev.3.00
Jul.15.2005
This octal bus transceiver is designed for synchronous two-way communication between data buses. The control
function implementation minimizes external timing requirements. The device allows data transmission from the A bus
to the B bus or from the B bus to the A bus depending upon the logic level at the direction control (DIR) input. The
enable input (G) can be used to disable the device so that the buses are effectively isolated.
Features
Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74LS245P
DILP-20 pin
PRDP0020AC-B
(DP-20NEV)
P
PRSP0020DD-B
HD74LS245FPEL SOP-20 pin (JEITA)
(FP-20DAV)
FP
HD74LS245RPEL SOP-20 pin (JEDEC) PRSP0020DC-A
RP
(FP-20DBV)
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
EL (1,000 pcs/reel)
Pin Arrangement
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 VCC
19 Enable G
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
(Top view)
Rev.3.00, Jul.15.2005, page 1 of 5


Renesas Electronics Components Datasheet

HD74LS245P Datasheet

Octal Bus Transceivers

No Preview Available !

HD74LS245
Function Table
Note:
Enable G
L
L
H
H; high level, L; low level, X; irrelevant
Direction Control DIR
L
H
X
Operation
B data to A bus
A data to B bus
Isolation
Block Diagram
Enable G
Transceiver (1/8)
B
A
Direction
Control DIR
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
VCC
7
Input voltage
DIR, G
VIN
7
A, B
VIN
5.5
Power dissipation
PT
400
Storage temperature
Tstg
–65 to +150
Operating temperature
Topr
–20 to +75
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Symbol
VCC
IOH
IOL
Topr
Min
4.75
–20
Typ
5.00
25
Max
5.25
–15
24
75
Unit
V
V
V
mW
°C
°C
Unit
V
mA
mA
°C
Rev.3.00, Jul.15.2005, page 2 of 5


Part Number HD74LS245P
Description Octal Bus Transceivers
Maker Renesas
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HD74LS245P Datasheet PDF






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