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
5. Pinning information
5.1 Pinning
OE 1
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
GND 10
74AHC574
74AHCT574
20 VCC
19 Q0
18 Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
11 CP
001aah037
Fig 5. Pin configuration SO20, TSSOP20
terminal 1
index area
74AHC574
74AHCT574
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
GND(1)
19 Q0
18 Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
001aah666
Transparent top view
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as a
supply pin or input.
Fig 6. Pin configuration DHVQFN20
5.2 Pin description
Table 2.
Symbol
OE
D[0:7]
GND
CP
Q[0:7]
VCC
Pin description
Pin
Description
1
3-state output enable input (active LOW)
2, 3, 4, 5, 6, 7, 8, 9
data input
10
ground (0 V)
11
clock input (LOW-to-HIGH, edge triggered)
19, 18, 17, 16, 15, 14, 13, 12 3-state flip-flop output
20
supply voltage
74AHC_AHCT574_2
Product data sheet
Rev. 02 — 24 January 2008
© NXP B.V. 2008. All rights reserved.
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