CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
Unless Otherwise Specified, T
A
= 0
o
C to 70
o
C for the HC55183, 184 only, all others -40
o
C to 85
o
C, V
BL
= -24V,
V
BH
= -100V, -85V or -75V, V
CC
= +5V, AGND = BGND = 0V, loop current limit = 25mA. All AC Parameters are
specified at 600Ω 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection
resistors = 0Ω. These parameters apply generically to each product offering.
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
RINGING PARAMETERS
(Note 2)
VRS Input Impedance (Note 3)
Differential Ringing Gain
4-Wire to 2-Wire Ringing Off Isolation
2-Wire to 4-Wire Transmit Isolation
AC TRANSMISSION PARAMETERS
(Notes 5, 6)
Receive Input Impedance (Note 3)
Transmit Output Impedance (Note 3)
4-Wire Port Overload Level
2-Wire Port Overload Level
2-Wire Return Loss
THD = 1%
THD = 1%
480
VRS to 2-wire, R
LOAD
=
∞
(Note 4)
Active mode, referenced to VRS input.
Ringing mode referenced to the differential ringing
amplitude.
78
-
-
-
80
60
60
-
82
-
-
kΩ
V/V
dB
dB
160
-
3.1
3.1
30
35
20
10
-0.20
-6.22
-6.22
C-Message
Psophometric
-
-
-
-
-
-
3.5
3.5
45
45
-
-
0.0
-6.02
-6.02
16
-73.5
10
-79.5
-
1
-
-
-
-
-
-
+0.30
-5.82
-5.82
19
-71
13
-77
kΩ
Ω
V
PK
V
PK
dB
dB
mA
RMS
mA
RMS
dB
dB
dB
dBrnC
dBmp
dBrnC
dBmp
300Hz
≤
f
<
1kHz
1kHz
≤
f
≤
3.4kHz
Longitudinal Current Capability (Per Wire) (Note 3)
Test for False Detect
Test for False Detect, Low Power Standby
4-Wire to 2-Wire Insertion Loss
2-Wire to 4-Wire Insertion Loss
4-Wire to 4-Wire Insertion Loss
Idle Channel Noise 2-Wire
Idle Channel Noise 4-Wire
C-Message
Psophometric
DC PARAMETERS
(Note 6)
Loop Current Limit Programming Range (Note 5)
Loop Current During Low Power Standby
Max Low Battery = -52V
Forward polarity only.
15
18
-
-
45
26
mA
mA
31
HC55180, HC55181, HC55182, HC55183, HC55184
Electrical Specifications
Unless Otherwise Specified, T
A
= 0
o
C to 70
o
C for the HC55183, 184 only, all others -40
o
C to 85
o
C, V
BL
= -24V,
V
BH
= -100V, -85V or -75V, V
CC
= +5V, AGND = BGND = 0V, loop current limit = 25mA. All AC Parameters are
specified at 600Ω 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection
resistors = 0Ω. These parameters apply generically to each product offering.
(Continued)
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
LOOP DETECTORS AND SUPERVISORY FUNCTIONS
Switch Hook Programming Range
Switch Hook Programming Accuracy
Dial Pulse Distortion
Ring Trip Comparator Threshold
Ring Trip Programming Current Accuracy
Ground Key Threshold
Thermal Alarm Output
LOGIC INPUTS (F0, F1, F2, E0, SWC)
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
LOGIC OUTPUTS (DET, ALM)
Output Low Voltage
Output High Voltage
POWER SUPPLY REJECTION RATIO
V
CC
to 2-Wire
f = 300Hz
f = 1kHz
f = 3.4kHz
V
CC
to 4-Wire
f = 300Hz
f = 1kHz
f = 3.4kHz
V
BL
to 2-Wire
V
BL
to 4-Wire
V
BH
to 2-Wire
V
BH
to 4-Wire
I
OL
= 5mA
I
OH
= 100
µA
V
IL
= 0.4V
V
IH
= 2.4V
5
Assumes 1% external programming resistor
-
-
2.3
-
10
IC junction temperature
-
-
2
-
2.6
-
12
175
15
10
1
2.9
10
13.5
-
mA
%
%
V
%
mA
o
C
-
2.0
-20
-
-
-
-
-
0.8
-
-
5
V
V
µA
µA
-
2.4
-
-
0.4
-
V
V
-
-
-
-
-
-
-
-
-
-
-
40
35
28
45
43
33
30
35
33
40
45
-
-
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
300Hz
≤
f
≤
3.4kHz
300Hz
≤
f
≤
3.4kHz
300Hz
≤
f
≤
3.4kHz
300Hz
≤
f
≤
1kHz
1kHz
<
f
≤
3.4kHz
NOTES:
2. These parameters are specified at high battery operation. For the HC55180 the external supply is set to high battery voltage, for the HC55181,
HC55182, HC55183 and HC55184, BSEL = 1.
3. These parameters are controlled via design or process parameters and are not directly tested. These parameters are characterized upon initial
design release and upon design changes which would affect these characteristics.
4. Differential Ringing Gain is measured with VRS = 0.795 V
RMS
for -100V devices, VRS = 0.663 V
RMS
for -85V devices and VRS = 0.575 V
RMS
for -75V devices.
5. These parameters are specified at low battery operation. For the HC55180, the external supply is set to low battery voltage, for the HC55181,
HC55182, HC55183 and HC55184, BSEL = 0.
6. Forward Active and Reverse Active performance is guaranteed for the HC55180, HC55181 and HC55184 devices only. The HC55182 and
HC55183 are specified for Forward Active operation only.
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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