Data Sheet

1. General description
The 74HC597; 74HCT597 is an 8-bit shift register with input flip-flops. It consists of an
8-bit storage register feeding a parallel-in, serial-out 8-bit shift register. Both the storage
register and the shift register have positive edge-triggered clocks. The shift register also
has direct load (from storage) and clear inputs. Inputs include clamp diodes that enable
the use of current limiting resistors to interface inputs to voltages in excess of V
CC
.
2. Features and benefits
 Complies with JEDEC standard JESD7A
 Input levels:
 For 74HC597: CMOS level
 For 74HCT597: TTL level
 8-bit parallel storage register inputs
 Shift register has direct overriding load and clear
 ESD protection:
 HBM EIA/JESD22-A114F exceeds 2000 V
 MM EIA/JESD22-A115-A exceeds 200 V
 Specified from 40 Cto+85C and from 40 Cto+125C
 Multiple package options
3. Ordering information
74HC597; 74HCT597
8-bit shift register with input flip-flops
Rev. 4 — 25 February 2016 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74HC597D 40 C to +125 C SO16 plastic small outline package; 16 leads; body width
3.9 mm
SOT109-1
74HCT597D
74HC597DB 40 C to +125 C SSOP16 plastic shrink small outline package; 16 leads;
body width 5.3 mm
SOT338-1
74HCT597DB
74HC597PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1