Serial input 8-bit edge triggered shift registers offer 8-push-pull outputs

Diodes' 74HC164 family of popular serial input 8-bit edge-triggered shift registers with 8-push-pull outputs is now available from Digi-Key. The 74HC164 features standard CMOS logic inputs while the 74HCT164 is suited for applications requiring TTL logic thresholds. Both versions feature 4 mA drive capability. The 74AHC164 is a higher-performance version that features 8 mA drive capability and faster propagation times. The 74AHCT is the TTL-compatible version. SO-14 and TSSOP-14 packages are available. The shift register can be used to expand the output capabilities of a simple-microcontroller. The required state can be clocked into a shift register and asserted onto the outputs. The shift register can maintain the state indefinitely, says the company.