SN54LVTR245, SN74LVTR245 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCAS428 - OCTOBER 1993
features
- State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low-Static Power Dissipation
- Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
- Supports Unregulated Battery Operation Down to 2.7 V
- Typical VOLP (Output Ground Bounce)< 0.8 V at VCC = 3.3 V, TA = 25°C
- Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
- Bus-Hold Data Inputs Eliminate the Need for External Pullup Resistors
- Reduced Output Structure on A Port Minimizes VOHV
- Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), and Ceramic DIPs (J)
description
These octal bus transceivers are designed specifically forlow-voltage (3.3-V) VCC operation, but with the capabilityto provide a TTL interface to a 5-V system environment.
The ´LVTR245 is designed for asynchronous communicationbetween data buses. The device transmits data from the A bus to the Bbus or from the B bus to the A bus depending upon the logic level atthe direction-control (DIR) input. The output-enable () input can be used to disable thedevice so the buses are effectively isolated.
Active bus-hold circuitry is provided to hold unused or floatingdata inputs at a valid logic level.
The A port is designed to minimize the undershoot exhibited onhigh to low transition during simultaneous switching conditions.
The SN74LVTR245 is available in TI's shrink small-outline package(DB), which provides the same I/O pin count and functionality ofstandard small-outline packages in less than half theprinted-circuit-board area.
The SN54LVTR245 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74LVTR245 is characterized for operation from -40°C to85°C.
Title: 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: STANDARD TRANSCEIVERS
Device Functionality: OCTAL BUS TRANSCEIVER
Orderable Devices: SN74LVTR245NSLE
View the complete PDF datasheet: scas428.pdf (111 K Bytes) (Requires Acrobat Reader 3.x)View more information about generic part numbers:SN74LVTR245
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