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74HC595 Ver la hoja de datos (PDF) - Philips Electronics

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74HC595 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state Philips
Philips Electronics Philips
74HC595 Datasheet PDF : 28 Pages
First Prev 21 22 23 24 25 26 27 28
Philips Semiconductors
8-bit serial-in, serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC595; 74HCT595
handbook, full pagewidth
OE input
10%
tr
90%
VM
tPLZ
Qn output
LOW-to-OFF
OFF-to-LOW
Qn output
HIGH-to-OFF
OFF-to-HIGH
tPHZ
10%
90%
outputs
enabled
tf
tPZL
VM
tPZH
outputs
disabled
VM
outputs
enabled
MSA697
74HC595: VM = 50%; VI = GND to VCC.
74HCT595: VM = 1.3 V; VI = GND to 3 V.
Fig.11 Waveforms showing the 3-state enable and disable times for input OE.
handbook, full pagewidth
VI
PULSE
GENERATOR
VCC
D.U.T
RT
VCC
VO
RL = 1 k
CL 50 pF
MGK563
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
SWITCH
open
VCC
GND
Definitions for test circuit:
RL = Load resistor.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to the output impedance Zo of the pulse generator.
Fig.12 Test circuit for 3-state outputs.
2003 Jun 25
21
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