74HC594 데이터 시트보기 (PDF) - Philips Electronics
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74HC594 Datasheet PDF : 10 Pages
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Philips Semiconductors
8-bit shift register with output register
Product specification
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
DESCRIPTION
The 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 DATA
GND = 0 V: Tamb = 250 C; tr = tf = 6 ns.
SYMBOL
PARAMETER
CONDITIONS
tPHL/tPLH
fmax
CI
CPD
propagation delay
SHCP to Q7’
STCP to Qn
SHR to Qn
STR to Qn
maximum clock frequency SHCP, STCP
input capacitance
power dissipation capacitance per package
CL = 15 pF; VCC = 5 V
notes 1 and 2
TYPICAL
UNIT
HC HCT
13
15
ns
13
15
ns
11
14
ns
11
14
ns
100 100 MHz
3.5 3.5 pF
84
89
pF
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 the outputs;
CL = output load capacitance in pF; VCC = supply voltage in V.
2. For HC, the condition is VI = GND to VCC; for HCT, the condition is VI = GND to VCC − 1.5 V.
ORDERING INFORMATION
EXTENDED TYPE NUMBER
PC74HC/HCT594P
PC74HC/HCT594T
PINS
16
16
PACKAGES
PIN POSITION
DIL
SO
MATERIAL
plastic
plastic
CODE
SOT38C, P
SOT109A
December 1991
2
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