Electrical Specifications

loop current limit = 25mA. All AC Parameters are specified at 600

Ω 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz.

Protection resistors = 0

Ω.

PARAMETER

HC55180 (NOTE 7)

HC55181

HC55183, HC55184

UNITS

TEST CONDITIONS

MIN

TYP

MAX

TEST CONDITIONS

MIN

TYP

MAX

TEST CONDITIONS

MIN

TYP

MAX

RINGING PARAMETERS (Note 2)

Ringing Voltage

Open Circuit

(Note 8)

THD

≤ 0.5%

-80

-

THD

≤ 0.5%

80

-

-

THD

≤ 0.5%

70

-

-

THD

≤ 0.5%

-95

-

THD

≤ 0.5%

95

-

-

(Note 9)

-

-

-

Ringing Voltage

Load = 1.3K

(Notes 8, 10)

THD

≤ 3.0%

-80

-

THD

≤ 3.0%

80

-

-

THD

≤ 3.0%

70

-

-

THD

≤ 3.0%

-95

-

THD

≤ 3.0%

95

-

-

(Note 9)

-

-

-

Tip Centering Voltage

-±2.5

-

--

±2.5

--

±3

V

-±2.0

-

-

-

±2.0

(Note 9)

-

-

-

V

Ring Centering Voltage

-±2.5

-

--

±2.5

--

±3

V

-±2.0

-

-

-

±2.0

(Note 9)

-

-

-

V

AC TRANSMISSION PARAMETERS (Notes 5, 6)

2-Wire Longitudinal Balance

(Notes 12, 13)

(Note 11)

-

-

-

-

-

-

Grade E

45

53

-

dB

Grade C, D

-

59

-

Grade C, D

53

59

-

(Note 11)

-

-

-

dB

4-Wire Longitudinal Balance

(Note 11)

-

-

-

-

-

-

Grade E

-

58

-

dB

Grade C, D

-

64

-

Grade C, D

-

64

-

(Note 11)

-

-

-

dB

2-Wire to 4-Wire Level Linearity

4-Wire to 2-Wire Level

Linearity

Referenced to -10dBm

+3 to -40dBm, 1kHz

-

±0.02

5

-

+3 to -40dBm, 1kHz

-

±0.025

-

+3 to -40dBm, 1kHz

-

±0.02

5

-dB

-40 to -50dBm, 1kHz

-

±0.05

0

-

-40 to -50dBm, 1kHz

-

±0.050

-

-40 to -50dBm, 1kHz

-

±0.05

0

-dB

-50 to -55dBm, 1kHz

-

±0.10

0

-

-50 to -55dBm, 1kHz

-

±0.100

-

-50 to -55dBm, 1kHz

-

±0.10

0

-dB

DC PARAMETERS

Loop Current Accuracy

(Notes 5, 6)

-

-

± 8.5

-

-

± 8.5

-

-

± 10

%

Open Circuit Voltage

(|Tip - Ring|, Note 6)

-

7.5

-

6.0

7.5

9.0

-

7.5

-

V

14

15.5

17

14

15.5

17

14

15.5

17

V

43

50

-

43

50

-

43

50

-

V