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74HC595 Datasheet

  • 74HC595

  • 8 BIT SHIFT REGISTER WITH OUTPUT LATCHES 3 STATE

  • 13頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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M54HC595
M74HC595
8 BIT SHIFT REGISTER WITH OUTPUT LATCHES (3 STATE)
.
.
.
.
.
.
.
.
HIGH SPEED
f
MAX
= 55 MHz (TYP.) AT V
CC
= 5 V
LOW POWER DISSIPATION
I
CC
= 4
碌A(chǔ)
(MAX.) AT T
A
= 25
擄C
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS FOR QA TO QH
10 LSTTL LOADS FOR QH鈥?/div>
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN.) FOR QA TO QH
|I
OH
| = I
OL
= 4 mA (MIN.) FOR QH鈥?/div>
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO 6 V
PIN AND FUNCTION COMPATIBLE
WITH LSTTL 54/74LS595
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC595F1R
M74HC595M1R
M74HC595B1R
M74HC595C1R
PIN CONNECTIONS
(top view)
DESCRIPTION
The M54/74HC595 is a high speed CMOS 8-BIT
SHIFT REGISTERS/OUTPUT LATCHES (3-
2
STATE) fabricated in silicon C MOS technology. It
has the same high speed performance of LSTTL
combined with true CMOS low power consumption.
This device contains an 8-bit serial-in, parallel-out
shift register that feeds an 8-bit D-type storage reg-
ister. The storage register has 8 3-STATE outputs.
Separate clocks are provided for both the shift reg-
ister and the storage register.
The shift register has a direct-overriding clear, serial
input, and serial output (standard) pins for cascad-
ing. Both the shift register and storage register use
positive-edge triggered clocks. If both clocks are
connected together, the shift register state will al-
ways be one clock pulse ahead of the storage reg-
ister.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
April 1993
NC =
No Internal
Connection
1/13

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