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74HC594DB-74HCT594D
8-bit shift register with output register
Philips Semiconductors Product specification
8-bit shift register with output register 74HC/HCT594
FEATURES Synchronous serial input and output 8-bit parallel output Shift and storage register have independent direct clear
and clocks 100 MHz (typ.) Output capability: parallel outputs: bus driver serial outputs: standard ICC category: MSI
APPLICATIONS Serial-to parallel data conversion Remote control holding register
DESCRIPTIONThe 74HC/HCT594 are high-speed, Si-gate CMOS
devices, and are pin compatible with low power Schottky
TTL (LSTTL). They are specified in compliance with
JEDEC standard No. 7A.
The 74HC/HCT594 contain an 8-bit, non-inverting,
serial-in, parallel-out shift register that feeds an 8-bit
D-type storage register. Separate clocks and direct
overriding clears are provided on both the shift and storage
registers. A serial output (Q7’) is provided for cascading
purposes.
Both the shift and storage register clocks are positive-edge
triggered. If the user wishes to connect both clocks
together, the shift register will always be one count pulse
ahead of the storage register.
QUICK REFERENCE DATAGND = 0 V: Tamb = 250 C; tr = tf = 6 ns.
Notes CPD is used to determine the dynamic power dissipation (PDin μW). = CPD× VCC2×fi+∑ (CL× VCC2× fo), where: = input frequency in MHz; fo = output frequency in MHz; (CL× VCC2×fo) = sum of the outputs;= output load capacitance in pF; VCC= supply voltage in V. For HC, the condition is VI = GND to VCC; for HCT, the condition is VI = GND to VCC− 1.5 V.
ORDERING INFORMATION
Philips Semiconductors Product specification
8-bit shift register with output register 74HC/HCT594
PINNING
Philips Semiconductors Product specification
8-bit shift register with output register 74HC/HCT594
FUNCTION TABLE
Note H = HIGH voltage level = LOW voltage level= LOW-to-HIGH transition= no change
X = don’t care.
Philips Semiconductors Product specification
8-bit shift register with output register 74HC/HCT594
Philips Semiconductors Product specification
8-bit shift register with output register 74HC/HCT594
DC CHARACTERISTICS FOR 74HCFor the DC characteristics, see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: parallel outputs, bus driver; serial output, standard.
ICC category: MSI.
AC CHARACTERISTICS FOR 74HCGND = 0 V; tr = tf = 6 ns; CL = 50 pF.
