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Datasheet> All Categories > semiconductor> logic> SN74LS640
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SN74LS640

Description
LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20
Categorysemiconductor    logic   
File Size77KB，8 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
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SN74LS640 Overview

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

SN74LS640 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 descriptionROHS COMPLIANT, PLASTIC, DIP-20
Lead-freeYes
stateACTIVE
CraftsmanshipTTL
packaging shapeRECTANGULAR
Package SizeIN-LINE
Terminal formTHROUGH-HOLE
Terminal spacing2.54 mm
terminal coatingNICKEL PALLADIUM GOLD
Terminal locationDUAL
Packaging MaterialsPLASTIC/EPOXY
Temperature levelCOMMERCIAL
seriesLS
Output characteristics3-ST
Logic IC typeTRANSCEIVER
Number of digits8
Output polarityTRUE
propagation delay TPD15 ns

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Download Datasheet
SN74LS640 SN74LS641
SN74LS642 SN74LS645
Octal Bus Transceivers
These octal bus transceivers are designed for asynchronous
two-way communication between data buses. Control function
implementation minimizes external timing requirements. These
circuits allow data transmission from the A bus to B or from the B bus
to A bus depending upon the logic level of the direction control (DIR)
input. Enable input (G) can disable the device so that the buses are
effectively isolated.
DEVICE
LS640
LS641
LS642
LS645
OUTPUT
3-State
Open-Collector
Open-Collector
3-State
LOGIC
Inverting
True
Inverting
True
http://onsemi.com
LOW
POWER
SCHOTTKY
FUNCTION TABLE
CONTROL
INPUTS
G
L
L
H
DIR
L
H
X
LS640
LS642
B data to A bus
A data to B bus
Isolation
OPERATION
LS641
LS645
B data to A bus
A data to B bus
Isolation
20
1
PLASTIC
N SUFFIX
CASE 738
H = HIGH Level, L = LOW Level, X = Irrelevant
20
GUARANTEED OPERATING RANGES
(SN74LS640, SN74LS645)
Symbol
V
CC
T
A
I
OH
Parameter
Supply Voltage
Operating Ambient
Temperature Range
Output Current – High
Min
4.75
0
Typ
5.0
25
Max
5.25
70
– 3.0
– 15
I
OL
Output Current – Low
24
Unit
V
°C
mA
mA
mA
1
SOIC
DW SUFFIX
CASE 751D
ORDERING INFORMATION
Device
SN74LS640N
SN74LS640DW
SN74LS641N
Package
16 Pin DIP
16 Pin
16 Pin DIP
16 Pin
16 Pin DIP
16 Pin
16 Pin DIP
16 Pin
Shipping
1440 Units/Box
2500/Tape & Reel
1440 Units/Box
2500/Tape & Reel
1440 Units/Box
2500/Tape & Reel
1440 Units/Box
2500/Tape & Reel
GUARANTEED OPERATING RANGES
(SN74LS641, SN74LS642)
Symbol
V
CC
T
A
V
OH
I
OL
Parameter
Supply Voltage
Operating Ambient
Temperature Range
Output Voltage – High
Output Current – Low
Min
4.75
0
Typ
5.0
25
Max
5.25
70
5.5
24
Unit
V
°C
V
mA
SN74LS641DW
SN74LS642N
SN74LS642DW
SN74LS645N
SN74LS645DW
©
Semiconductor Components Industries, LLC, 1999
1
December, 1999 – Rev. 6
Publication Order Number:
SN74LS640/D

SN74LS640 Related Products

SN74LS640 74LS645 SN74LS645N SN74LS645DW SN74LS642N SN74LS642DW SN74LS641N SN74LS641DW SN74LS640N SN74LS640DW
Description LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20, PLASTIC, DIP-20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, PLASTIC, SOIC-20 LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
Number of functions 1 1 1 1 1 1 1 1 1 1
Number of terminals 20 20 20 20 20 20 20 20 20 20
Maximum operating temperature 70 Cel 70 Cel 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C
Number of ports 2 2 2 2 2 2 2 2 2 2
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
series LS LS LS LS LS LS LS LS LS LS
Output characteristics 3-ST 3-ST 3-STATE 3-STATE OPEN-COLLECTOR OPEN-COLLECTOR OPEN-COLLECTOR OPEN-COLLECTOR 3-STATE 3-STATE
Number of digits 8 8 8 8 8 8 8 8 8 8
Output polarity TRUE TRUE TRUE TRUE INVERTED INVERTED TRUE TRUE INVERTED INVERTED
Is it Rohs certified? - - incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible
Parts packaging code - - DIP SOIC DIP SOIC DIP SOIC DIP SOIC
package instruction - - PLASTIC, DIP-20 PLASTIC, SOIC-20 PLASTIC, DIP-20 PLASTIC, SOIC-20 PLASTIC, DIP-20 PLASTIC, SOIC-20 PLASTIC, DIP-20 PLASTIC, SOIC-20
Contacts - - 20 20 20 20 20 20 20 20
Reach Compliance Code - - not_compliant not_compliant _compli _compli _compli _compli _compli _compli
Control type - - COMMON CONTROL COMMON CONTROL COMMON CONTROL COMMON CONTROL COMMON CONTROL COMMON CONTROL COMMON CONTROL COMMON CONTROL
Counting direction - - BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL BIDIRECTIONAL
JESD-30 code - - R-PDIP-T20 R-PDSO-G20 R-PDIP-T20 R-PDSO-G20 R-PDIP-T20 R-PDSO-G20 R-PDIP-T20 R-PDSO-G20
JESD-609 code - - e0 e0 e0 e0 e0 e0 e0 e0
length - - 26.415 mm 12.8 mm 26.415 mm 12.8 mm 26.415 mm 12.8 mm 26.415 mm 12.8 mm
Logic integrated circuit type - - BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER BUS TRANSCEIVER
MaximumI(ol) - - 0.024 A 0.024 A 0.024 A 0.024 A 0.024 A 0.024 A 0.024 A 0.024 A
Package body material - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - - DIP SOP DIP SOP DIP SOP DIP SOP
Encapsulate equivalent code - - DIP20,.3 SOP20,.4 DIP20,.3 SOP20,.4 DIP20,.3 SOP20,.4 DIP20,.3 SOP20,.4
Package shape - - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - - IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - - 235 - NOT SPECIFIED NOT SPECIFIED 235 NOT SPECIFIED 240 NOT SPECIFIED
propagation delay (tpd) - - 15 ns 15 ns 25 ns 25 ns 25 ns 25 ns 15 ns 15 ns
Certification status - - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - - 4.57 mm 2.65 mm 4.57 mm 2.65 mm 4.57 mm 2.65 mm 4.57 mm 2.65 mm
Maximum supply voltage (Vsup) - - 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V
Minimum supply voltage (Vsup) - - 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V
Nominal supply voltage (Vsup) - - 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
surface mount - - NO YES NO YES NO YES NO YES
technology - - TTL TTL TTL TTL TTL TTL TTL TTL
Terminal surface - - TIN LEAD TIN LEAD Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal pitch - - 2.54 mm 1.27 mm 2.54 mm 1.27 mm 2.54 mm 1.27 mm 2.54 mm 1.27 mm
Maximum time at peak reflow temperature - - 30 - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED 30 NOT SPECIFIED
width - - 7.62 mm 7.5 mm 7.62 mm 7.5 mm 7.62 mm 7.5 mm 7.62 mm 7.5 mm
Maker - - - - ON Semiconductor ON Semiconductor ON Semiconductor ON Semiconductor ON Semiconductor ON Semiconductor
power supply - - - - 5 V 5 V 5 V 5 V 5 V 5 V
Prop。Delay @ Nom-Su - - - - 25 ns 25 ns 25 ns 25 ns 15 ns 15 ns
translate - - - - N/A N/A N/A N/A N/A N/A

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