M-8870-02P ETC2 [List of Unclassifed Manufacturers], M-8870-02P Datasheet - Page 6

• Manufacturer Part Number: M-8870-02P
• Description: DTMF Receiver
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

Teltone Corporation, 22121-20th Avenue SE, Bothell, WA 98021-4408 U.S.A
40-406-00011, Rev. E
Valid input signal levels (each tone of com-
posite signal)
Positive twist accept
Negative twist accept
Frequency deviation accept limit
Frequency deviation reject limit
Third tone tolerance
Noise tolerance
Dial tone tolerance
Tone present detection time
Tone absent detection time
Minimum tone duration accept
Maximum tone duration reject
Minimum interdigit pause accept
Maximum interdigit pause reject
Propagation delay (St to Q)
Propagation delay (St to StD)
Output data setup (Q to StD)
Propagation delay (OE to Q), enable
Propagation delay (OE to Q), disable
Crystal clock frequency
Clock output (OSC2), capacitive load
All voltages referenced to V
*Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.
Notes:
1. dBm = decibels above or below a reference power of 1 mW into a 600 W load.
2. Digit sequence consists of all 16 DTMF tones.
3. Tone duration = 40 ms. Tone pause = 40 ms.
4. Nominal DTMF frequencies are used, measured at GS.
5. Both tones in the composite signal have an equal amplitude.
6. Bandwidth limited (0 to 3 kHz) Gaussian noise.
7. The precise dial tone frequencies are (350 and 440 Hz)
8. For an error rate of better than 1 in 10,000.
9. Referenced to lowest level frequency component in DTMF signal.
10. Minimum signal acceptance level is measured with specified maximum frequency deviation.
11. Input pins defined as IN+, IN-, and OE.
12. External voltage source used to bias V
13. This parameter also applies to a third tone injected onto the power supply.
14. Referenced to Figure 4. Input DTMF tone level at -28 dBm.
Parameter
SS
unless otherwise noted. For typical values V
REF
Symbol
t
t
t
t
t
t
f
C
PStD
QStD
t
t
t
REC
REC
t
PTD
PTE
CLK
.
t
DP
DA
DO
PQ
ID
LO
Table 6 AC Specifications
3.5759
27.5
Min
3.5%
+18
-29
-25
0.5
20
20
5
2%.
Page 6
M-8870
3.5795
Typ*
+22
300
-16
-12
4.0
50
8
3
6
9
DD
= 5.0 V, V
± 1.5% + 2 Hz
3.5831
Max
869
8.5
+1
10
10
14
40
40
11
16
60
30
Phone: [phone] or 425-487-1515 Fax: [phone]
SS
= 0 V, T
E-mail: [e-mail] Internet: www.teltone.com
mVRMS
Units
Nom.
Nom.
dBm
MHz
dB
dB
dB
dB
dB
ms
ms
ms
ms
ms
ms
ms
pF
ns
ns
A
s
s
= 25 C, f
User adjustable (see Figures 3
R
CLK
L
2,3,4,5,8,9,13,14
= 10 k , C
= 3.579545 MHz.
See Figure 8
2,3,4,5,6,8,9
2,3,4,5,7,8,9
1,2,3,4,5,8
2,3,5,8,10
OE = V
2,3,4,8
Notes
and 5)
2,3,5
DD
L
= 50 pF