74
S-301
SM8701BM (IC113: 1U-3692)
SN74LV273APW (IC106, 107: 1U-3692)
SN74AHCT273PW (IC105: 1U-3692)
SN74LV573APW (IC903, 904: 1U-3694)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
MLEN/R2
P/S
V
DD
GND
XTO
XTI
GNDP
V
DD
P
V
DD
3
MO
MCK/R1
MDT/R0
RSTN
SO3
V
DD
O
GNDO
SO2
SO4
SO1
MON
14
13
12
11
Control signal input.
1 MLEN/R2 Ip
1
In serial mode: latch enable signal
In parallel mode: sampling rate select signal
2 P/S Ip
1
Mode select signal.
LOW: serial mode, HIGH: parallel mode
3V
DD
5V supply (Digital block)
4 GND Ground (Digital block)
5 XTO O Reference signal crystal oscillator element connection
6 XTI I
Reference signal crystal oscillator element connection
or external clock input
7 GNDP Ground (PLL block)
8V
DD
P 5V supply (PLL block)
9V
DD
3 3.3V supply (output buffer)
10 MO O 27 MHz fixed-frequency output
11 MON O 27 MHz fixed-frequency output (inverted)
12 SO1 O 33.8688 MHz fixed-frequency output
13 SO4 O 768fs output
14 SO2 O 256fs output
15 GNDO Ground (output buffer)
16 V
DD
O 3.3V supply (output buffer)
17 SO3 O 384fs output
18 RSTN Ip
2
LOW-level reset input
Control signal input.
19 MDT/R0 Ip
1
In serial mode: control data input signal
In parallel mode: sampling frequency select signal
Control signal input.
20 MCK/R1 Ip
1
In serial mode: clock signal
In parallel mode: sampling frequency select signal
Pin Name Function
Pin No.
I/O
SM8701BM Terminal Function
Note: 1. Schmitt trigger input with pull-down resistor
2. Schmitt trigger input with pull-up resistor
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CLR
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
logic diagram (positive logic)
CLK
1D
1Q
2D
2Q
3D
3Q
4D
4Q
5D
5Q
6D
6Q
7D
7Q
8D
8Q
CLR
1D
R
C1
1D
R
C1
1D
R
C1
1D
R
C1
1D
R
C1
1D
R
C1
1D
R
C1
1D
R
C1
3 4 7 8 13 14 17 18
2 5 6 9 12 15 16 19
11
1
1
2
3
4
5
6
7
8
10
9
20
19
18
17
16
15
14
13
12
11
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
Vcc
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
LE
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D0
D1 D2
D3 D4 D5 D6
D7
L
E
OE
1
234
567
89
11
12131415
16
17
1819
Q0 Q1
Q2
Q3
Q4 Q5 Q6 Q7
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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http://www.xiaoyu163.com
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