74HC597 74HCT597 8-bit shift register with input flip-flops Rev. 3 15 April 2014 Product 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 Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC5974N 40 C to +125 C DIP16 plastic dual in-line package 16 leads (300 mil) SOT38-4 74HCT597N 74HC597D 40 C to +125 C SO16 plastic small outline package 16 leads body width SOT109-1 3.9 mm 74HCT597D 74HC597DB 40 C to +125 C SSOP16 plastic shrink small outline package 16 leads SOT338-1 body width 5.3 mm 74HCT597DB 74HC597PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm74HC597 74HCT597 NXP Semiconductors 8-bit shift register with input flip-flops 4. Functional diagram 67&3 05 6 67&3 %,7 ,1387 6+,) 7 ,1387 %,7 )/,3 )/2 36 5(*,67(5 6+,) 7 )/23 6 5(*,67(5 4 4 3/ 6+&3 3/ 6+&3 DDD DDD Fig 1. Functional diagram Fig 2. Logic symbol 65* 5 & DDD Fig 3. IEC Logic symbol 74HC HCT597 All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 3 15 April 2014 2 of 23 & & )/,3 6 05