Low Power Standby

Open Circuit Voltage

(Tip - Ring, Note 2)

43

47

-

43

-

47

43

-

47

V

43

49

-

43

49

-

43

49

-

V

Absolute Open Circuit

Voltage (Note 6)

--53

-56

--53

-56

--53

-56

V

TEST ACCESS FUNCTIONS

Switch On Voltage

(Note 14)

-

-

-

-

0.30

0.60

(Note 14)

-

-

-

V

Loopback Max Battery

-

-

52

-

-

52

(Note 15)

-

-

52

V

SUPPLY CURRENTS (Supply currents not listed are considered negligible and do not contribute significantly to total power dissipation. All measurements made under open circuit load conditions.)

Low Power Standby

(Note 2)

2.0

3.7

6.0

2.0

3.7

6.0

-3.7

6.0

mA

-

0.375

-

0.375

0.600

-

0.375

-

mA

Forward or Reverse

(Note 5)

2.5

4.0

5.0

2.5

4.0

5.0

2.0

4.0

6.0

mA

-

1.0

2.5

-1.0

2.5

-1.0

2.5

mA

Forward

(Note 2)

3.5

5.5

8.0

3.5

5.5

8.0

2.0

5.5

8.0

mA

(Note 7)

-

-

-

-1.3

2.0

-1.3

2.5

mA

-

3.2

4.5

-

1.7

2.5

-

1.4

3.0

mA

Ringing

(Note 2)

-8.5

-

-8.5

-

-8.5

-

mA

(Note 7)

-

-

-

-0.4

2.0

-0.4

2.0

mA

-

2.3

5.0

-

1.3

2.5

-

1.3

2.5

mA

Forward Loopback

(Note 5)

-

8.5

10.0

-

8.5

10.0

(Note 15)

-

-

-

mA

-

19

25.5

-

19

25.5

-

-

-

mA

Tip Open

(Note 5)

--

5.5

-

-

5.5

(Note 16)

-

-

-

mA

-

-

1.0

--

1.0

-

-

-

mA

Power Denial

(Note 5)

0.5

3.0

6.0

0.5

3.0

6.0

-3.0

6.0

mA

-

0.2

0.5

-0.2

0.5

-0.2

0.5

mA

ON HOOK POWER DISSIPATION (Note 17)

Forward or Reverse

(Notes 5, 6)

-

44

60

-

44

60

-

44

60

mW

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. (Continued)

PARAMETER

HC55180 (NOTE 7)

HC55181

HC55183, HC55184

UNITS

TEST CONDITIONS

MIN

TYP

MAX

TEST CONDITIONS

MIN

TYP

MAX

TEST CONDITIONS

MIN

TYP

MAX