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74ALS645 Series

Octal Bus Transceivers With 3-State Outputs

Manufacturer: Texas Instruments

Catalog(4 parts)

PartVoltage - Supply▲▼Voltage - Supply▲▼Mounting TypeSupplier Device PackageNumber of Bits per Element▲▼Current - Output High, Low▲▼Current - Output High, Low▲▼Operating Temperature▲▼Operating Temperature▲▼Package / CasePackage / Case▲▼Output TypeNumber of Elements▲▼Package / Case▲▼Package / Case▲▼
Texas Instruments
SN74ALS645ANSR
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-SO
5.5 V
4.5 V
Surface Mount
20-SO
8 ul
0.024000000208616257 A
0.014999999664723871 A
70 °C
0 °C
20-SOIC
0.0052999998442828655 m, 0.005308600142598152 m
3-State
1 ul
Texas Instruments
SN74ALS645A-1DW
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
5.5 V
4.5 V
Surface Mount
20-SOIC
8 ul
0.024000000208616257 A
0.014999999664723871 A
70 °C
0 °C
20-SOIC
0.007493000011891127 m, 0.007499999832361937 m
3-State
1 ul
Texas Instruments
SN74ALS645A-1N
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-PDIP
5.5 V
4.5 V
Through Hole
20-PDIP
8 ul
0.024000000208616257 A
0.014999999664723871 A
70 °C
0 °C
20-DIP
3-State
1 ul
0.007619999814778566 m
0.007619999814778566 m
Texas Instruments
SN74ALS645ADWR
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-SOIC
5.5 V
4.5 V
Surface Mount
20-SOIC
8 ul
0.024000000208616257 A
0.014999999664723871 A
70 °C
0 °C
20-SOIC
0.007493000011891127 m, 0.007499999832361937 m
3-State
1 ul

Key Features

• Bidirectional Bus Transceivers in High-Density 20-Pin PackagesTrue Logic3-State OutputsPackage 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 PackagesTrue Logic3-State OutputsPackage 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 on the level at the direction-control (DIR) input. The output-enableinput can be used to disable the device so that the buses are effectively isolated. The -1 version of the SN74ALS645A is identical to the standard version, except that the recommended maximum IOLis increased to 48 mA. There is no -1 version of the SN54ALS645A. The SN54ALS645A and SN54AS645 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS645A and SN74AS645 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 on the level at the direction-control (DIR) input. The output-enableinput can be used to disable the device so that the buses are effectively isolated. The -1 version of the SN74ALS645A is identical to the standard version, except that the recommended maximum IOLis increased to 48 mA. There is no -1 version of the SN54ALS645A. The SN54ALS645A and SN54AS645 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS645A and SN74AS645 are characterized for operation from 0°C to 70°C.