The SN74LV8T594 device contains an
8-bit, serial-in, parallel-out shift register.
Each parallel output of the shift register is fed
through a storage register before reaching the
primary device outputs (QA through
QH). Separate clocks (SRCLK and RCLK)
and direct overriding clear
(SRCLR and
RCLR) inputs are provided for
both the shift and storage registers, allowing for
loading data separately from sending it to the
outputs. Additionally, the last output of the
internal shift register is sent directly to the
output QH providing a method to
daisy-chain multiple shift registers.
The input is designed with a reduced threshold
circuit to support up translation when the supply
voltage is larger than the input voltage.
Additionally, the 5V tolerant input pins enable
down translation when the input voltage is larger
than the supply voltage. The output level is
always referenced to the supply voltage
(VCC) and supports 1.8V, 2.5V, 3.3V,
and 5V CMOS levels.
The SN74LV8T594 device contains an
8-bit, serial-in, parallel-out shift register.
Each parallel output of the shift register is fed
through a storage register before reaching the
primary device outputs (QA through
QH). Separate clocks (SRCLK and RCLK)
and direct overriding clear
(SRCLR and
RCLR) inputs are provided for
both the shift and storage registers, allowing for
loading data separately from sending it to the
outputs. Additionally, the last output of the
internal shift register is sent directly to the
output QH providing a method to
daisy-chain multiple shift registers.
The input is designed with a reduced threshold
circuit to support up translation when the supply
voltage is larger than the input voltage.
Additionally, the 5V tolerant input pins enable
down translation when the input voltage is larger
than the supply voltage. The output level is
always referenced to the supply voltage
(VCC) and supports 1.8V, 2.5V, 3.3V,
and 5V CMOS levels.