Download 74HC597 Datasheet PDF
Philips Semiconductors
74HC597
FEATURES - 8-bit parallel storage register inputs - Shift register has direct overriding load and clear - Output capability: standard - ICC category: MSI GENERAL DESCRIPTION 74HC/HCT597 The 74HC/HCT597 are high-speed Si-gate CMOS devices and are pin patible with low power Schottky TTL (LSTTL). They are specified in pliance with JEDEC standard no. 7A. The 74HC/HCT597 consist each 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. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL t PHL/ t PLH PARAMETER propagation delay SHCP to Q STCP to Q PL to Q fmax CI CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where: fi = input frequency in MHz fo = output frequency in MHz ∑ (CL × VCC2 × fo) = sum of...