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74245

Description
LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
Categorysemiconductor    logic   
File Size61KB,6 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Parametric Compare View All

74245 Overview

LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20

74245 Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals20
Maximum operating temperature70 Cel
Minimum operating temperature0.0 Cel
Maximum supply/operating voltage5.25 V
Minimum supply/operating voltage4.75 V
Rated supply voltage5 V
Number of ports2
Processing package description0.300 INCH, PLASTIC, SOIC-20
stateTRANSFERRED
CraftsmanshipTTL
packaging shapeRECTANGULAR
Package SizeSMALL OUTLINE
surface mountYes
Terminal formGULL WING
Terminal spacing1.27 mm
Terminal locationDUAL
Packaging MaterialsPLASTIC/EPOXY
Temperature levelCOMMERCIAL
seriesLS
Output characteristics3-ST
Logic IC typeTRANSCEIVER
Number of digits8
Output polarityTRUE
propagation delay TPD12 ns
DM74LS245 3-STATE Octal Bus Transceiver
August 1986
Revised March 2000
DM74LS245
3-STATE Octal Bus Transceiver
General Description
These octal bus transceivers are designed for asynchro-
nous 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
s
Bi-Directional bus transceiver in a high-density 20-pin
package
s
3-STATE outputs drive bus lines directly
s
PNP inputs reduce DC loading on bus lines
s
Hysteresis at bus inputs improve noise margins
s
Typical propagation delay times, port-to-port 8 ns
s
Typical enable/disable times 17 ns
s
I
OL
(sink current)
24 mA
s
I
OH
(source current)
−15
mA
Ordering Code:
Order Number
DM74LS245WM
DM74LS245SJ
DM74LS245N
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 “X” to the ordering code.
Connection Diagram
Function Table
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
© 2000 Fairchild Semiconductor Corporation
DS006413
www.fairchildsemi.com

74245 Related Products

74245 74LS245 DM74LS245SJ DM74LS245WM DM74LS245 DM74LS245N LS245
Description LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
Number of functions 1 1 1 1 1 1 1
Number of terminals 20 20 20 20 20 20 20
Maximum operating temperature 70 Cel 70 Cel 70 °C 70 °C 70 Cel 70 °C 70 Cel
Minimum operating temperature 0.0 Cel 0.0 Cel - - 0.0 Cel - 0.0 Cel
Number of ports 2 2 2 2 2 2 2
surface mount Yes Yes YES YES Yes NO Yes
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING THROUGH-HOLE GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
series LS LS LS LS LS LS LS
Output characteristics 3-ST 3-ST 3-STATE 3-STATE 3-ST 3-STATE 3-ST
Number of digits 8 8 8 8 8 8 8
Output polarity TRUE TRUE TRUE TRUE TRUE TRUE TRUE
Maximum supply/operating voltage 5.25 V 5.25 V - - 5.25 V - 5.25 V
Minimum supply/operating voltage 4.75 V 4.75 V - - 4.75 V - 4.75 V
Rated supply voltage 5 V 5 V - - 5 V - 5 V
Processing package description 0.300 INCH, PLASTIC, SOIC-20 0.300 INCH, PLASTIC, SOIC-20 - - 0.300 INCH, PLASTIC, SOIC-20 - 0.300 INCH, PLASTIC, SOIC-20
state TRANSFERRED TRANSFERRED - - TRANSFERRED - TRANSFERRED
Craftsmanship TTL TTL - - TTL - TTL
packaging shape RECTANGULAR RECTANGULAR - - RECTANGULAR - RECTANGULAR
Package Size SMALL OUTLINE SMALL OUTLINE - - SMALL OUTLINE - SMALL OUTLINE
Terminal spacing 1.27 mm 1.27 mm - - 1.27 mm - 1.27 mm
Packaging Materials PLASTIC/EPOXY PLASTIC/EPOXY - - PLASTIC/EPOXY - PLASTIC/EPOXY
Logic IC type TRANSCEIVER TRANSCEIVER - - TRANSCEIVER - TRANSCEIVER
propagation delay TPD 12 ns 12 ns - - 12 ns - 12 ns
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