74AHC574D 查看數據表（PDF） - NXP Semiconductors.
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74AHC574D Datasheet PDF : 18 Pages
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NXP Semiconductors
74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
VI
CP input
GND
VI
Dn input
GND
VM
t su
th
VM
t su
th
VOH
Qn output
VOL
VM
mna803
Fig 8.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
The shaded areas indicate when the input is permitted to change for predicable output performance.
The data input (D) to clock input (CP) set-up times and clock input (CP) to data input (D) hold times
VI
OE input
GND
VCC
Qn output
LOW-to-OFF
OFF-to-LOW
VOL
VOH
Qn output
HIGH-to-OFF
OFF-to-HIGH
GND
VM
tPLZ
tPZL
tPHZ
VX
VY
VM
tPZH
VM
outputs
enabled
outputs
disabled
outputs
enabled
001aah078
Fig 9.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Enable and disable times
Table 8. Measurement points
Type
74AHC574
74AHCT574
Input
VM
0.5VCC
1.5 V
Output
VM
0.5VCC
0.5VCC
VX
VOL + 0.3 V
VOL + 0.3 V
VY
VOH − 0.3 V
VOH − 0.3 V
74AHC_AHCT574_2
Product data sheet
Rev. 02 — 24 January 2008
© NXP B.V. 2008. All rights reserved.
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