JVC XV-S402SL - 4 Description of Major Ics; 74 VHC00 MTC-X (IC455,IC503): 2-Input Nand Gate; 74 VHC74 MTC-X (IC454): ZIVA Wait

XV-S300BK/XV-S332SL/XV-S402SL/XV-S403SG
26
SECTION 4
Description of major ICs
4.1 74VHC00MTC-X (IC455,IC503) : 2-input nand gate
4.1.1 Pin layout 4.1.2 Truth table
L : High impedance
4.2 74VHC74MTC-X (IC454) : ZIVA Wait
4.2.1 Terminal layout 4.2.2 .Trouth table
4.2.3 Pin function
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VC
C
4A
4B
4Y
3A
3B
3Y
1A
1B
1Y
2A
2B
2Y
G
ND
ABY
LLH
LHH
HL H
HHL
1
2
3
4
5
6
7
C
LR1
D1
CK1
PR1
Q1
Q1
GND
14
13
12
11
10
9
8
Vcc
CLR
2
D2
CK2
PR2
Q2
Q2
CK1 D1
Q1 Q1
PR1CLR1
CK2D2
Q2 Q2
PR2CLR2
Input Output Function
CLR
PR DCK Q Q
L
H
L
H
H
H
H
L
L
H
H
H
X
X
X
L
H
X
X
X
X
L
H
H(Note 1)
L
H
Qn
H
L
H(Note 1)
H
L
Qn
Clear
Preset
No change
Pin No. Symbol I/O Description Pin No. Symbol I/O Description
1 CLR1 I Direct clear input 1 8 Q2 O Output
2 D1 I Data input 1 9 Q2 O Output
3 CK1 I Clock pulse input 1 10 PR2 I Direct preset input 2
4 PR1 I Direct preset input 1 11 CK2 I Click pulse input 2
5 Q1 O Output 12 D2 I Data input 2
6 Q1 O Output 13 CLR2 I Clock clear input 2
7 GND - Connect to ground 14 VCC - Power supply