32

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.

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.

LOOP DETECTORS AND SUPERVISORY FUNCTIONS

Switch Hook Programming Range

5

-

15

mA

Switch Hook Programming Accuracy

Assumes 1% external programming resistor

-

2

10

%

Dial Pulse Distortion

--

1

%

Ring Trip Comparator Threshold

2.3

2.6

2.9

V

Ring Trip Programming Current Accuracy

-

-

10

%

Ground Key Threshold

10

12

13.5

mA

Thermal Alarm Output

IC junction temperature

-

175

-

LOGIC INPUTS (F0, F1, F2, E0, SWC)

Input Low Voltage

-

-

0.8

V

Input High Voltage

2.0

-

-

V

Input Low Current

-20

-

-

µA

Input High Current

-

-

5

µA

LOGIC OUTPUTS (DET, ALM)

Output Low Voltage

-

-

0.4

V

Output High Voltage

2.4

-

-

V

POWER SUPPLY REJECTION RATIO

f = 300Hz

-

40

-

dB

f = 1kHz

-

35

-

dB

f = 3.4kHz

-

28

-

dB

f = 300Hz

-

45

-

dB

f = 1kHz

-

43

-

dB

f = 3.4kHz

-

33

-

dB

300Hz

≤ f ≤ 3.4kHz

-

30

-

dB

300Hz

≤ f ≤ 3.4kHz

-

35

-

dB

300Hz

≤ f ≤ 3.4kHz

-

33

-

dB

300Hz

≤ f ≤ 1kHz

-

40

-

dB

1kHz

< f ≤ 3.4kHz

-

45

-

dB

Electrical Specifications

specified at 600

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

resistors = 0

Ω. These parameters apply generically to each product offering. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

HC55180, HC55181, HC55182, HC55183, HC55184