CH1840 Datasheet, PDF (6/7 Pages) List of Unclassifed Manufacturers – Low Profile Data Access Arrangement (DAA) Modules

PARAMETER
LOGIC
Input high
Input low
Input leakage high
Input leakage low
Output high
Output low
Telephone Line Interface AC
Impedance
Isolation Protection
Surge Protection
Transmit Level
Transmit Insertion Loss
Receive insertion Gain
Trans-hybrid loss
On-Hook Impedance
Loop Current
Receive Output Impedance
Transmit Input Impedance
FCC Registration Number
Ringer Equivalence
TIMERS
Ring Detection Delay
Billing Delay Timer
Hook Switch
Power Supply Current
Table 2
CH1840 DAA Electrical Specifications
TA = 0ºC to 55ºC unless otherwise specified
Extended Temperature (ET) versions available to TA = -40ºC to +85ºC
SYMBOL
CONDITIONS
MIN.
TYP.
MAX. UNITS
VIH
VIL
IIH
IIL
VOH
VOL
ZLINE
VTRX
GTRX
GRCV
GTH
ZONHK
ILOOP
ZRNC
ZTRX
REN
TRGD
TBD
ICH5
IOH = 0.2mA
IOL = 2.0mA
Conforms to FCC Part 68 hazardous voltage and
leakage
Conforms to FCC Part 68 for surge
Measure at XMIT, 1800 Hz
CH1840
(Voice Mode) CH1840D
1800 Hz, 600 Ohms, 35mA loop current
CH1840
(Voice Mode) CH1840D
1800 Hz, 600 Ohms, 35mA loop current
600 Ohms +3% between TIP & RING
600 Hz to 4000 Hz
OFFHK = 0 volts
OFFHK = 5 volts
Measured at RCV
Measured at XMIT @ 1800 Hz
Supplied on unit label
Supplied on unit label
Ringing at 40 Hz, 45 VRMS
+5V ±5% Supply Voltage
Off Hook
On Hook
3.0
5.0
V
-0.3
0.8
V
500
uA
-500
uA
3.0
3.5
5.3
V
0
0.2
0.4
V
600
Ohms
1K
VRMS
800
Vpeak
0.774
0.251
VRMS
VRMS
9.5
10
10.5
dB
-0.5
0.0
0.5
dB
-0.5
0
+0.5
dB
18
23
dB
10
20
Mohm
20
80
mA
50
mA
50
100
Kohm
0.2A
REN
200
360
ms
2.0
2.5
3.0
sec
0.5
1.0
mA
6
10
mA
3
6
mA
© 2000 Cermetek Microelectronics, Inc.
Page 6
Document No. 607-0011 Rev. A (5/00)