HIT HD74LVC16374A Datasheet
HD74LVC16374A
16-bit D-type Flip Flops with 3-state Outputs
ADE-205-122B(Z)
3rd Edition
December 1996
Description
The HD74LVC16374A has sixteen edge trigger D type flip flops with three state outputs in a 48 pin
package. Data at the D inputs meeting set up reguirements, are transferred to the Q outputs on positive
going transitions of the clock input. When the latch enable goes low, data at the D inputs will be retained
at the outputs until latch enable returns high again. When a high logic level is applied to the output control
input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs
and the state of the storage elements. Low voltage and high speed operation is suitable at the battery drive
product (note type personal computer) and low power consumption extends the life of a battery for long
time operation.
Features
• VCC = 2.0 V to 5.5 V
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• All outputs V
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±24 mA (@VCC = 3.0 V to 5.5 V)
(Max.) = 5.5 V (@VCC = 0 V or output off state)
OUT
HD74LVC16374A
Function Table
Inputs
G CK D Output Q
HXXZ
L↑ LL
L↑HH
LLXQ
H: High level
L: Low level
X: Immaterial
Z: High impedance
↑: Low to high transition
Q
: Level of Q before the indicated steady input conditions were established.
0
0
2
Pin Arrangement
1G
1Q1
1Q2
GND
1Q3
1Q4
V
CC
1Q5
1Q6
GND
1Q7
1Q8
2Q1
2Q2
GND
2Q3
2Q4
V
CC
2Q5
2Q6
GND
2Q7
2Q8
2G
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
HD74LVC16374A
1CK
1
2
3
4
5
6
7
8
9
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
G
CK
Q
D
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1D1
1D2
GND
1D3
1D4
V
CC
1D5
1D6
GND
1D7
1D8
2D1
2D2
GND
2D3
2D4
V
CC
2D5
2D6
GND
2D7
2D8
2CK
(Top view)
3
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