ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 15

• Manufacturer Part Number: ds21ft40
• Description: Ds21ft40 Four X Three 12 Channel E1 Framer
• Manufacturer: Maxim Integrated Products, Inc.

DS21FT40 PCB Land Pattern Figure 2-1
The diagram shown below is the lead pattern that will be placed on the target PCB. This is the same
pattern that would be seen as viewed through the MCM from the top.
A
D
G
H
K
M
N
U
V
W
Y
B
C
E
L
P
R
T
F
J
rsync
rsync
rpos
rpos
tneg
tneg
rpos
sync
tpos
rser
tclk
tser
tsys
rclk
rser
tclk
tser
rclk
clk
nc
nc
1
ts
1
1
1
1
2
2
2
2
2
2
5
5
5
5
6
6
6
6
rsync
dvdd
dvdd
tsync
rneg
sync
sync
rneg
rneg
sync
tneg
rpos
rclk
rsys
tpos
tpos
rsys
tsys
tclk
clk
clk
clk
nc
rm
rm
2
ts
1
1
1
2
2
2
2
2
8
5
5
5
2
5
6
6
6
6
6
sync1
tsync
dvdd
rsync
tpos
tneg
sync
rneg
tpos
dvss
rneg
tser
rser
rclk
tsys
rclk
tser
rsys
tclk
clk
clk
rm
3
nc
ts
1
1
1
1
3
2
8
2
5
5
5
8
8
8
2
6
8
6
tsync
tsync
rsync
dvdd
sync
rpos
dvss
sync
rpos
sync
dvss
sync
cs2*
tser
tsys
tsys
rsys
rser
rsys
rser
clk
rm
clk
clk
clk
rm
4
ts
ts
4
1
1
3
1
2
3
3
8
2
5
5
8
8
8
9
3
6
6
rsync
tsync
tsync
tsync
dvss
tneg
sync
tpos
sync
tneg
rpos
rsys
rsys
tsys
rsys
tclk
tclk
tclk
tser
clk
clk
clk
clk
rm
5
nc
ts
4
1
3
1
3
3
3
2
3
8
5
8
8
8
7
7
7
6
7
rsync
sync
dvss
rser
tclk
rclk
tser
rm
6
nc
nc
nc
1
3
3
7
7
7
7
rsync
dvdd
tsync
dvdd
rneg
tpos
sync
tser
rser
7
nc
ts
4
1
4
3
7
2
7
7
7
sync4
rser4
sync
cs1*
dvss
tneg
sync
rsys
clk
rm
nc
10
nc
8
ts
ts
4
4
2
7
rneg
rpos
rneg
dvss
rneg
rsys
rclk
rclk
tsys
tser
clk
clk
10
10
9
4
4
4
3
1
9
9
7
15 of 87
10
tneg
tpos
rpos
sync
tpos
tsys
rclk
tsys
rclk
clk
rm
clk
10
10
10
nc
4
4
4
3
9
9
rsync
11
rpos
rneg
sync
rser
rm
nc
nc
nc
nc
nc
10
10
10
9
9
dvdd
tneg
12
rsys
rser
clk
11
10
10
nc
nc
nc
nc
nc
nc
3
tsync
rsync
tsync
13
test
tclk
tclk
nc
nc
nc
nc
10
10
10
9
9
14
tpos
tneg
fs1
fs0
nc
nc
nc
nc
nc
ns
9
9
rsync
15
sync
cs3*
tsys
clk
bts
nc
nc
nc
11
ns
ns
ts
9
9
dvdd
tsync
tsync
dvss
16
int*
wr*
tser
tclk
rser
rser
tser
12
12
12
11
11
11
nc
nc
nc
nc
nc
nc
nc
nc
nc
3
9
3
17
mux
rneg
sync
rclk
rsys
D6
D7
A6
A7
clk
nc
nc
nc
nc
nc
nc
nc
nc
12
12
nc
nc
nc
11
11
ts
tsys
clk
12
rsync
18
tpos
tneg
tclk
tsys
rclk
rd*
A4
A5
D4
D5
clk
nc
nc
nc
nc
nc
nc
nc
nc
12
11
11
11
11
11
DS21FT40
dvdd
rpos
sync
sync
rpos
19
tneg
A2
A3
D2
D3
12
12
12
rm
11
11
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
ts
3
20
rneg
sync
tpos
dvss
tser
A0
A1
D0
D1
12
rm
12
12
12
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
3