SN54LVTH2245, SN74LVTH2245 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS707B - SEPTEMBER 1997 - REVISED MARCH 1998

features

State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static Power Dissipation
B-Port Outputs Have Equivalent 22-Ω Series Resistors, So No External Resistors Are Required
High-Impedance State During Power Up and Power Down
Power Off Disables Outputs, Permitting Live Insertion
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
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 JESD 17
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
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 on 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.

The B-port outputs, which are designed to source or sink up to 12 mA, include equivalent 22-Ω series resistors to reduce overshoot and undershoot.

When V_CC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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 SN54LVTH2245 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVTH2245 is characterized for operation from -40°C to 85°C.

Title: 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: STANDARD TRANSCEIVERS
Device Functionality: OCTAL BUS TRANSCEIVER

View the complete PDF datasheet: scbs707b.pdf (202 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN74LVTH2245

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