UPD9903GT データシートの表示（PDF） - NEC => Renesas Technology
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UPD9903GT Datasheet PDF : 28 Pages
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µPD9903
3.2 Combined Specifications with the µPC7073
DC characteristics
µPC7073 (VBB = –42 to –58 V, VCC = 5 V ± 0.25 V, TA = 0 to 70 ˚C, 18 ≤ IL ≤ ILMAX (mA))
µPD9903 (TA = 0 to 70 ˚C, VDD = 5 V ± 0.25 V, VDG = VAG = 0 V, fDCLK = 2048 kHz)
Parameter
DC feed resistance
Minimum loop current
Maximum current setting
value
Pin voltage during on-hook
Voltage between lines
during on-hook
Supervisory control
– VBB abnormal voltage
Symbol
RBF
ILMIN
ILMAX
VTS
VRS
VTS
VRS
VTS
Conditions
200 Ω feed
400 Ω feed
VBB = –51 V
200 Ω feed
RL = 1900 Ω
400 Ω feed
ILMAX = 76 mA setting
200 Ω feed
400 Ω feed
ILMAX = 45 mA setting
ILMAX = 35 mA setting
Normal on-hook,
between Tip and GND, VBB = –48 V
Normal on-hook,
between Ring and VBB, VBB = –48 V
On-hook transmission,
between Tip and GND, VBB = –48 V
On-hook transmission,
between Ring and VBB, VBB = –48 V
VBB = –48 V
MIN.
180
360
21.7
18.2
70
50
40
31
2.25
TYP.
200
400
22.2
18.8
76
55
45
35
2.55
MAX.
220
440
22.6
19.3
82
60
50
39
2.85
Units
Ω
mA
mA
V
3.05 3.35 3.65
2.25 2.55 2.85
3.05 3.35 3.65
VBB – 7.0 VBB – 5.9 VBB – 5.0 V
VBBF
32
35
38
V
17
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