MT88E39
Advance Information
AC Electrical Characteristics† - Timing
‡
Characteristics
Power-up time
Sym
tPU
tPD
tIAL
tIAH
Min
Typ
Max
Units
Notes*
1
2
3
4
5
50
1000
25
ms
µs
PWDN
OSC1
Power-down time
100
1
Input FSK to CD low delay
Input FSK to CD high delay
Hysteresis
ms
ms
ms
CD
10
10
† 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 I
.
DDQ
AC Electrical Characteristics† - 3-Wire FSK Interface Timing (Mode 0)
‡
Characteristics
Sym
Min
Typ
Max
Units
Notes*
DATA
1
2
Rate
1188
1200
1
1212
5
bps
ms
ns
1, 6
Input FSK to DATA delay
Rise time
tIDD
tR
3
200
200
3
3
4
Fall time
tF
ns
DATA
DCLK
5
DATA to DCLK delay
DCLK to DATA delay
Frequency
tDCD
tCDD
6
6
416
416
µs
µs
Hz
µs
µs
µs
1, 2, 5, 6
6
1, 2, 5, 6
7
1200.4 1202.8 1205.2
2
2
2
2
DCLK
8
High time
tCH
tCL
415
415
415
416
416
416
417
417
417
9
Low time
DCLK
DR
10
DCLK to DR delay
tCRD
11
12
13
Rise time
Fall time
Low time
tRR
tFF
tRL
10
µs
ns
µs
4
4
2
DR
200
417
415
416
† 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 V , 50pF to V
SS
DD
SS.
SS
4. 10k to V , 50pF to V
.
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
Frequency
Sym
Min
Typ
Max
Units
Notes*
1
2
3
4
5
fDCLK1
1
MHz See Fig. 12
DCLK
Duty Cycle
30
70
%
Rise Time
100
ns
DCLK low setup time to DR
DCLK low hold time to DR
tDDS
tDDH
500
500
ns
ns
See Fig. 12
See Fig. 12
DCLK
DR
† 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.
5-10
MITEL [ MITEL NETWORKS CORPORATION ]
