Data Sheet
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 2 of 18
Nexperia
74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
3. Ordering information
4. Functional diagram
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74AHC574D −40 °C to +125 °C SO20 plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74AHCT574D
74AHC574PW −40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74AHCT574PW
74AHC574BQ −40 °C to +125 °C DHVQFN20 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 20 terminals;
body 2.5 × 4.5 × 0.85 mm
SOT764-1
74AHCT574BQ
Fig 1. Functional diagram
mna800
3-STATE
OUTPUTS
FF1
to
FF8
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
12
13
14
15
16
17
18
19
D0
D1
D2
D3
D4
D5
D6
D7
CP
OE
9
11
1
8
7
6
5
4
3
2
Fig 2. Logic diagram
001aah077
D0
CP
OE
Q0
D
CP
Q
FF1
D1
Q1
D
CP
Q
FF2
D2
Q2
D
CP
Q
FF3
D3
Q3
D
CP
Q
FF4
D4
Q4
D
CP
Q
FF5
D5
Q5
D
CP
Q
FF6
D6
Q6
D
CP
Q
FF7
D7
Q7
D
CP
Q
FF8
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Nexperia B.V. 2017. All rights reserved