74VHC595
8-Bit Shift Register with Output Latches
tm
Features
General Description
■ High Speed: tPD = 5.4ns (Typ.) at VCC = 5V
■ Low power dissipation: ICC = 4µA (Max.) at TA = 25°C
The VHC595 is an advanced high-speed CMOS Shift
Register fabricated with silicon gate CMOS technology.
It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS
low power dissipation.
■ High noise immunity: VNIH = VNIL = 28% VCC (Min.)
■ Power down protection is provided on all inputs
■ Low noise: VOLP = 0.9V (Typ.)
■ Pin and function compatible with 74HC595
This device contains an 8-bit serial-in, parallel-out shift
register that feeds an 8-bit D-type storage register. The
storage register has eight 3-STATE outputs. Separate
clocks are provided for both the shift register and the
storage register. The shift register has a direct-overriding
clear, serial input, and serial output (standard) pins for
cascading. Both the shift register and storage register
use positive-edge triggered clocks. If both clocks are
connected together, the shift register state will always be
one clock pulse ahead of the storage register.
An input protection circuit insures that 0V to 7V can be
applied to the input pins without regard to the supply
voltage. This device can be used to interface 5V to 3V
systems and two supply systems such as battery
backup. This circuit prevents device destruction due to
mismatched supply and input voltages.
Ordering Information
Order
Number
Package
Number
Package Description
74VHC595M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
74VHC595SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC595MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the
ordering number.
©1993 Fairchild Semiconductor Corporation
74VHC595 Rev. 1.2
www.fairchildsemi.com
74VHC595 8-Bit Shift Register with Output Latches
May 2007
