Nexperia
74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
&3
'
4
'
4
'
4
'
4
'
4
'
4
'
4
'
4
2(
PQD
Fig 3. Logic symbol
5. Pinning information
5.1 Pinning
&
(1
'
PQD
Fig 4. IEC logic symbol
+&
+&7
2(
'
'
'
'
'
'
'
'
*1'
Fig 5. Pin configuration SO20, SSOP20 and TSSOP20
9&&
4
4
4
4
4
4
4
4
&3
DDQ
5.2 Pin description
Table 2.
Symbol
OE
D[0:7]
GND
CP
Q[0:7]
VCC
Pin description
74HC_HCT574
Product data sheet
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
11
19, 18, 17, 16, 15, 14, 13, 12
20
Description
3-state output enable input (active LOW)
data input
ground (0 V)
clock input (LOW-to-HIGH, edge triggered)
3-state flip-flop output
supply voltage
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
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