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DM74LS245N

Description
LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20
Categorylogic    logic   
File Size61KB,6 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
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DM74LS245N Overview

LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20

DM74LS245N Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerFairchild
Parts packaging codeDIP
package instructionDIP, DIP20,.3
Contacts20
Reach Compliance Codeunknow
Control typeCOMMON CONTROL
Counting directionBIDIRECTIONAL
seriesLS
JESD-30 codeR-PDIP-T20
JESD-609 codee0
length26.075 mm
Logic integrated circuit typeBUS TRANSCEIVER
MaximumI(ol)0.024 A
Number of digits8
Number of functions1
Number of ports2
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Output characteristics3-STATE
Output polarityTRUE
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP20,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Prop。Delay @ Nom-Su12 ns
propagation delay (tpd)12 ns
Certification statusNot Qualified
Maximum seat height5.08 mm
Maximum supply voltage (Vsup)5.25 V
Minimum supply voltage (Vsup)4.75 V
Nominal supply voltage (Vsup)5 V
surface mountNO
technologyTTL
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
translateN/A
width7.62 mm
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

DM74LS245N Related Products

DM74LS245N 74245 74LS245 DM74LS245SJ DM74LS245WM DM74LS245 LS245
Description LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 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, PDSO20
series LS LS LS LS LS LS LS
Number of digits 8 8 8 8 8 8 8
Number of functions 1 1 1 1 1 1 1
Number of ports 2 2 2 2 2 2 2
Number of terminals 20 20 20 20 20 20 20
Maximum operating temperature 70 °C 70 Cel 70 Cel 70 °C 70 °C 70 Cel 70 Cel
Minimum operating temperature - 0.0 Cel 0.0 Cel - - 0.0 Cel 0.0 Cel
Output characteristics 3-STATE 3-ST 3-ST 3-STATE 3-STATE 3-ST 3-ST
Output polarity TRUE TRUE TRUE TRUE TRUE TRUE TRUE
surface mount NO Yes Yes YES YES Yes Yes
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
Terminal form THROUGH-HOLE GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL
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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