鈥?/div>
Microprocessor compatible control inputs
On chip control memory and address decoding
Row addressing
Master reset
32 crosspoint switches in 8 x 4 array
5.0V to 15.0V operation
Low crosstalk between switches
Low on resistance: 90鈩?(typ.) at 13V
Matched switch characteristics
Switches frequencies up to 40MHz
ISSUE 2
October 1989
Ordering Information
MT8804AC
24 Pin Ceramic DIP
MT8804AE
24 Pin Plastic DIP
MT8804AP
28 Pin PLCC
-40擄 to 85擄C
Description
The MT8804A is a CMOS/LSI 8 x 4 Analog Switch
Array incorporating control memory (32 bits), deco-
der and digital logic level converters. This circuit has
digitally controlled analog switches having very low
鈥淥N鈥?resistance and very low 鈥淥FF鈥?leakage current.
Switches will operate with analog signals at
frequencies to 40 MHz and up to 15.0Vp-p. A
鈥淗IGH鈥?on the Master Reset input switches all
channels 鈥淥FF鈥?and clears the memory. This device
is ideal for crosspoint switching applications.
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
PABX and key sytems
Data acquisition systems
Test equipment/instrumentation
Analog/digital multiplexers
AE
D0 D1 D2 D3
VDD
VEE
VSS
1
1
鈥⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€?/div>
A0
A1
A2
8
32
3 to 8
Decoder
8 x 4
Latches
Switch
Array
Li I/O
(i=0-7)
鈥⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€⑩€?/div>
MR
Ji I/O (i=0-3)
Figure 1 - Functional Block Diagram
3-3
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