M-8870 Datasheet, PDF (5/8 Pages) Clare, Inc. – DTMF Receiver

M-8870
Table 5 Tone Decoding
F_LOW
F_HIGH
Key (ref.)
OE
Q4
Q3
Q2
Q1
697
1209
1
H
0
0
0
1
697
1336
2
H
0
0
1
0
697
1477
3
H
0
0
1
1
770
1209
4
H
0
1
0
0
770
1336
5
H
0
1
0
1
770
1477
6
H
0
1
1
0
852
1209
7
H
0
1
1
1
852
1336
8
H
1
0
0
0
852
1477
9
H
1
0
0
1
941
1336
0
H
1
0
1
0
941
1209
F
H
1
0
1
1
941
1477
#
H
1
1
0
0
697
1633
A
H
1
1
0
1
770
1633
B
H
1
1
1
0
852
1633
C
H
1
1
1
1
941
1633
D
H
0
0
0
0
ANY
ANY
ANY
L
Z
Z
Z
Z
L = logic low, H = logic high, Z = high impedance
Figure 6 Differential Input Configuration
Ordering Information
M-8870-01
M-8870-01SM
M-8870-01SMTR
M-8870-02P
M-8870-02S
M-8870-02T
18-pin plastic DIP
18-pin plastic SOIC
18-pin plastic SOIC, tape and reel
18-pin plastic DIP, power-down
option
18-pin plastic SOIC, power-down
option
18-pin plastic SOIC, power-down
option, tape and reel
Figure 7 Common Crystal Connection
Teltone Corporation, 22121-20th Avenue SE, Bothell, WA 98021-4408 U.S.A
40-406-00011, Rev. E
Page 5
Phone: [phone] or 425-487-1515 Fax: [phone]
E-mail: [e-mail] Internet: www.teltone.com