74ABTE16245 Series
16-bit Incident-Wave Switching Bus Transceivers With 3-State Outputs
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Logic Type | Number of Bits▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Supply Voltage▲▼ | Supply Voltage▲▼ | Mounting Type | Supplier Device Package | Package / Case▲▼ | Package / Case | Package / Case▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|
Incident-Wave Switching Bus Transceivers | 16 b | -40 °C | 85 °C | 4.5 V | 5.5 V | Surface Mount | 48-TSSOP | 0.006099999882280827 m | 48-TFSOP | 0.006095999851822853 m | |
Incident-Wave Switching Bus Transceivers | 16 b | -40 °C | 85 °C | 4.5 V | 5.5 V | Surface Mount | 48-SSOP | 48-BSSOP (0.295", 7.50mm Width) |
Key Features
• Members of the Texas Instruments Widebus™ FamilySupport the VME64 ETL SpecificationReduced, TTL-Compatible, Input Threshold RangeHigh-Drive Outputs (IOH= –60 mA, IOL= 90 mA) Support 25-Incident-Wave SwitchingVCCBIAS Pin Minimizes Signal Distortion During Live InsertionInternal Pullup Resistor on (OE)\ Keeps Outputs in High-Impedance State During Power Up or Power DownDistributed VCCand GND Pins Minimize High-Speed Switching NoiseEquivalent 25-Series Damping Resistor on B PortBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsWidebus is a trademark of Texas Instruments.Members of the Texas Instruments Widebus™ FamilySupport the VME64 ETL SpecificationReduced, TTL-Compatible, Input Threshold RangeHigh-Drive Outputs (IOH= –60 mA, IOL= 90 mA) Support 25-Incident-Wave SwitchingVCCBIAS Pin Minimizes Signal Distortion During Live InsertionInternal Pullup Resistor on (OE)\ Keeps Outputs in High-Impedance State During Power Up or Power DownDistributed VCCand GND Pins Minimize High-Speed Switching NoiseEquivalent 25-Series Damping Resistor on B PortBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsWidebus is a trademark of Texas Instruments.
Description
AI
The ’ABTE16245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for synchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated. When (OE)\ is low, the device is active.
The B port has an equivalent 25-series output resistor to reduce ringing. Active bus-hold inputs also are on the B port to hold unused or floating inputs at a valid logic level.
The A port provides for the precharging of the outputs via VCCBIAS, which establishes a voltage between 1.3 V and 1.7 V when VCCis not connected.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
The ’ABTE16245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for synchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated. When (OE)\ is low, the device is active.
The B port has an equivalent 25-series output resistor to reduce ringing. Active bus-hold inputs also are on the B port to hold unused or floating inputs at a valid logic level.
The A port provides for the precharging of the outputs via VCCBIAS, which establishes a voltage between 1.3 V and 1.7 V when VCCis not connected.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.