SN54LVT245, SN74LVT245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS130G - MAY 1992 - REVISED JANUARY 1996

features

State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low-Static Power Dissipation
Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V V_CC)
Support Unregulated Battery Operation Down to 2.7 V
Typical V_OLP (Output Ground Bounce) < 0.8 V at V_CC = 3.3 V, T_A = 25°C
Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
Bus-Hold Data Inputs Eliminate the Need for External Pullup Resistors
Support Live Insertion
Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Packages, and Ceramic (J) DIPs

description

These octal bus transceivers are designed specifically for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

These devices are designed for asynchronous communication between data buses. They transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction-control (DIR) input. The output-enable (OE\) input can be used to disable the devices so the buses are effectively isolated.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The SN74LVT245A is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area.

The SN54LVT245 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVT245A is characterized for operation from -40°C to 85°C.

Title: 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: UNIVERSAL BUS TRANSCEIVERS (UBTS)
Device Functionality: OCTAL BUS TRANSCEIVER
Orderable Devices: SNJ54LVT245FK, SNJ54LVT245J, SNJ54LVT245W, SN74LVT245ADBLE, SN74LVT245ADW, SN74LVT245ADWR, SN74LVT245APWLE

View the complete PDF datasheet: scbs130g.pdf (102 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN54LVT245, SN74LVT245A

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