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74VHCT595PW 8-bit serial-in/serial-out or parallel-out shift register with output latches NXP
NXP Semiconductors. NXP
74VHCT595PW Datasheet PDF : 22 Pages
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74VHC595; 74VHCT595
8-bit serial-in/serial-out or parallel-out shift register with
output latches
Rev. 2 — 4 July 2012
Product data sheet
1. General description
The 74VHC595; 74VHCT595 are high-speed Si-gate CMOS devices and are pin
compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with
JEDEC standard No. 7A.
The 74VHC595; 74VHCT595 are 8-stage serial shift registers with a storage register and
3-state outputs. The shift registers have separate clocks.
Data is shifted on the positive-going transitions of the shift register clock input (SHCP).
The data in each register is transferred to the storage register on a positive-going
transition of the storage register clock input (STCP). If both clocks are connected together,
the shift register will always be one clock pulse ahead of the storage register.
The shift register has a serial input (DS) and a serial standard output (Q7S) for cascading.
It is also provided with asynchronous reset (active LOW) for all 8 shift register stages. The
storage register has 8 parallel 3-state bus driver outputs. Data in the storage register
appears at the output whenever the output enable input (OE) is LOW.
2. Features and benefits
Balanced propagation delays
All inputs have Schmitt-trigger action
Inputs accept voltages higher than VCC
Input levels:
The 74VHC595 operates with CMOS input level
The 74VHCT595 operates with TTL input level
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
Multiple package options
Specified from 40 C to +85 C and from 40 C to +125 C
3. Applications
Serial-to-parallel data conversion
Remote control holding register
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