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74ALS640 Series

OCTAL BUS TRANSCEIVER 3-STATE

Manufacturer: Texas Instruments

Catalog(9 parts)

PartLogic TypeNumber of Elements▲▼Voltage - Supply▲▼Voltage - Supply▲▼Mounting TypePackage / Case▲▼Package / CaseCurrent - Output High, Low▲▼Current - Output High, Low▲▼Output TypeOperating Temperature▲▼Operating Temperature▲▼Number of Bits per Element▲▼Supplier Device PackagePackage / Case▲▼Package / Case▲▼
Texas Instruments
SN74ALS640BDWG4
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SOIC
Texas Instruments
SN74ALS640B-1DWR
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SOIC
Texas Instruments
SN74ALS640BDWE4
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SOIC
Texas Instruments
SN74ALS640B-1NSR
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SO
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.0052999998442828655 m, 0.005308600142598152 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SO
Texas Instruments
SN74ALS640BNSRG4
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SO
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.0052999998442828655 m, 0.005308600142598152 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SO
Texas Instruments
SN74ALS640BDWR
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SOIC
Texas Instruments
SN74ALS640B-1N
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-PDIP
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Through Hole
20-DIP
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-PDIP
0.007619999814778566 m
0.007619999814778566 m
Texas Instruments
SN74ALS640BDWRE4
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SOIC
Texas Instruments
SN74ALS640BNSR
Transceiver, Inverting 1 Element 8 Bit per Element 3-State Output 20-SO
Inverting, Transceiver
1 ul
5.5 V
4.5 V
Surface Mount
0.0052999998442828655 m, 0.005308600142598152 m
20-SOIC
0.024000000208616257 A
0.014999999664723871 A
3-State
70 °C
0 °C
8 ul
20-SO

Key Features

• Bidirectional Bus Transceivers in High-Density 20-Pin PackagesInverting LogicPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPsBidirectional Bus Transceivers in High-Density 20-Pin PackagesInverting LogicPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

Description

AI
These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated. The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOLfor the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B. The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C. These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated. The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOLfor the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B. The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C.