AD8108 Analog Devices, AD8108 Datasheet - Page 7

• Manufacturer Part Number: AD8108
• Description: 325 Mhz, 8x8 Buffered Video Crosspoint Switch (Gain=1)
• Manufacturer: Analog Devices

Pin Name
INxx
DATA IN
CLK
DATA OUT
UPDATE
RESET
CE
SER/PAR
OUTyy
AGND
DVCC
DGND
AVEE
AVCC
AGNDxx
AVCCxx/yy
AVEExx/yy
A0
A1
A2
D0
D1
D2
D3
NC
INPUT
Pin Numbers
1, 3, 5, 7, 9, 11, 13, 15
57
58
59
56
61
60
55
41, 38, 35, 32, 29, 26, 23, 20
2, 4, 6, 8, 10, 12, 14, 16, 46
63, 79
62, 80
17, 45
18, 44
42, 39, 36, 33, 30, 27, 24, 21
43, 37, 31, 25, 22, 19
40, 34, 28, 22
54
53
52
51
50
49
48
47, 64–78
ESD
ESD
AVEE
V
CC
INPUT
ESD
ESD
V
DGND
CC
Pin Description
Analog Inputs; xx = Channel Numbers 00 Through 07.
Serial Data Input, TTL Compatible.
Clock, TTL Compatible. Falling Edge Triggered.
Serial Data Output, TTL Compatible.
Enable (Transparent) “Low.” Allows serial register to connect directly to switch
matrix. Data latched when “High.”
Disable Outputs, Active “Low.”
Chip Enable, Enable “Low.” Must be “low” to clock in and latch data.
Selects Serial Data Mode, “Low” or Parallel Data Mode, “High.” Must be connected.
Analog Outputs yy = Channel Numbers 00 Through 07.
Analog Ground for Inputs and Switch Matrix.
5 V for Digital Circuitry
Ground for Digital Circuitry
–5 V for Inputs and Switch Matrix.
+5 V for Inputs and Switch Matrix.
Ground for Output Amp, xx = Output Channel Numbers 00 Through 07. Must be connected.
+5 V for Output Amplifier that is shared by Channel Numbers xx and yy. Must be connected.
–5 V for Output Amplifier that is shared by Channel Numbers xx and yy. Must be connected.
Parallel Data Input, TTL Compatible (Output Select LSB).
Parallel Data Input, TTL Compatible (Output Select).
Parallel Data Input, TTL Compatible (Output Select MSB).
Parallel Data Input, TTL Compatible (Input Select LSB).
Parallel Data Input, TTL Compatible (Input Select).
Parallel Data Input, TTL Compatible (Input Select MSB).
Parallel Data Input, TTL Compatible (Output Enable).
No Connect.
PIN FUNCTION DESCRIPTIONS
AVEE
V
CC
ESD
ESD
1k
(AD8109 ONLY)
OUTPUT
2k
V
CC
DGND
ESD
ESD
RESET
V
CC
OUTPUT
ESD
ESD
DGND
AD8108/AD8109
20k