SN54LVTH16835, SN74LVTH16835 3.3-V ABT 18-BIT UNIVERSAL BUS DRIVERS WITH 3-STATE OUTPUTS

SCBS713A - MARCH 1998 - REVISED MARCH 1998

features

Members of the Texas Instruments Widebus^TM Family
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
High-Impedance State During Power Up and Power Down
Typical V_OLP (Output Ground Bounce) < 0.8 V at V_CC = 3.3 V, T_A = 25°C
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Power Off Disables Outputs, Permitting Live Insertion
Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
Flow-Through Architecture Optimizes PCB Layout
Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings
Widebus is a trademark of Texas Instruments Incorporated.

description

The 'LVTH16835 devices are 18-bit universal bus drivers designed for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

Data flow from A to Y is controlled by the output-enable (OE\) input. These devices operate in the transparent mode when the latch-enable (LE) input is high. The A data is latched if the clock (CLK) input is held at a high or low logic level. If LE is low, the A data is stored in the latch/flip-flop on the low-to-high transition of the clock. When OE\ is high, the outputs are in the high-impedance state.

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

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 SN54LVTH16835 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVTH16835 is characterized for operation from -40°C to 85°C.

^† Output level before the indicated steady-state input conditions were established, provided that CLK is high before LE goes low

^‡ Output level before the indicated steady-state input conditions were established

Title: 3.3-V ABT 18-BIT UNIVERSAL BUS DRIVERS WITH 3-STATE OUTPUTS
Product Family: UNIVERSAL BUS DRIVERS (UBDS)
Device Functionality: 18-BIT UNIVERSAL BUS DRIVER

View the complete PDF datasheet: scbs713a.pdf (104 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN74LVTH16835

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