74HC595 Datasheet, PDF (21/28 Pages) NXP Semiconductors – 8-bit serial-in/serial or parallel-out shift register with output latches; 3-state

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: V_M = 50%; V_I = GND to V_CC.
74HCT595: V_M = 1.3 V; V_I = 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 kΩ
CL 50 pF
MGK563
TEST
t_PLH/t_PHL
t_PLZ/t_PZL
t_PHZ/t_PZH
SWITCH
open
V_CC
GND
Definitions for test circuit:
R_L = Load resistor.
C_L = Load capacitance including jig and probe capacitance.
R_T = Termination resistance should be equal to the output impedance Z_o of the pulse generator.
Fig.12 Test circuit for 3-state outputs.
2003 Jun 25
21