Features: *2-V to 5.5-V VCC Operation* Max tpd of 7.1 ns at 5 V* Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25* Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V, TA = 25* Support Mixed-Mode Voltage Operation on All Ports* 8-Bit Serial-In, Parallel-Out Shift* Io...
SN74LV595A: Features: *2-V to 5.5-V VCC Operation* Max tpd of 7.1 ns at 5 V* Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25* Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V,...
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The 'LV595A devices are 8-bit shift registers designed for 2-V to 5.5-V VCC operation.
These devices LV595A contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift and storage register. The shift register has a direct overriding clear (SRCLR) input, serial (SER) input, and a serial output for cascading. When the output-enable (OE) input is high, all outputs except QH are in the high-impedance state.
Both the LV595A shift register clock (SRCLK) and storage register clock (RCLK) are positive-edge triggered. If both clocks are connected together, the shift register always is one clock pulse ahead of the storage register.
To ensure the high-impedance state during power up or power down, LV595A OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices LV595A are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.