MT88E39 Просмотр технического описания (PDF) - Mitel Networks
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MT88E39 Datasheet PDF : 14 Pages
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MT88E39
Advance Information
AC Electrical Characteristics† - Timing
Characteristics
Sym Min Typ‡ Max Units
1 PWDN Power-up time
2 OSC1 Power-down time
tPU
50
ms
tPD
100 1000 µs 1
3
Input FSK to CD low delay
tIAL
25
ms
4 CD Input FSK to CD high delay
tIAH
10
ms
5
Hysteresis
10
ms
† AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only, not guaranteed and not subject to production testing.
Notes*:
1. The device will stop functioning within this time, but more time may be required to reach IDDQ.
Notes*
AC Electrical Characteristics† - 3-Wire FSK Interface Timing (Mode 0)
Characteristics
Sym Min Typ‡ Max Units
Notes*
1 DATA Rate
1188 1200 1212 bps 1, 6
2
Input FSK to DATA delay
3
Rise time
4 DATA Fall time
5 DCLK DATA to DCLK delay
6
DCLK to DATA delay
7
Frequency
tIDD
1
5
ms
tR
200
ns 3
tF
200
ns 3
tDCD
6
416
µs 1, 2, 5, 6
tCDD
6
416
µs 1, 2, 5, 6
1200.4 1202.8 1205.2 Hz 2
8 DCLK High time
9
Low time
10 DCLK DCLK to DR delay
DR
tCH
415
416
417
µs 2
tCL
415
416
417
µs 2
tCRD 415
416
417
µs 2
11
Rise time
tRR
10
µs 4
12 DR Fall time
tFF
200
ns 4
13
Low time
tRL
415
416
417
µs 2
† AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only, not guaranteed and not subject to production testing.
Notes*:
1. FSK input data at 1200 ±12 baud.
2. OSC1 at 3.579545 MHz ±0.2%.
3. 10k to VSS, 50pF to VSS.
4. 10k to VDD, 50pF to VSS.
5. Function of signal condition.
6. For a repeating mark space sequence, the data stream will typically have equal 1 and 0 bit durations.
AC Electrical Characteristics† - 3-Wire FSK Interface Timing (Mode 1)
Characteristics
Sym Min Typ‡ Max Units
Notes*
1
Frequency
2 DCLK Duty Cycle
fDCLK1
30
1 MHz See Fig. 12
70
%
3
Rise Time
100 ns
4 DCLK DCLK low setup time to DR
tDDS 500
ns
5 DR DCLK low hold time to DR
tDDH 500
ns
† AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only, not guaranteed and not subject to production testing.
See Fig. 12
See Fig. 12
5-10
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