3

Absolute Delay

(Note 2)

2-Wire/4-Wire

300Hz to 3400Hz

-

-

1

µs

4-Wire/2-Wire

300Hz to 3400Hz

-

-

1

µs

4-Wire/4-Wire

300Hz to 3400Hz

-

0.95

1.5

µs

Total Harmonic Distortion

2-Wire/4-Wire, 4-Wire/2-Wire, 4-Wire/4-Wire

Reference Level 0dBm at 600

Ω,

300Hz to 3400Hz (Note 3)

-

-

-50

dB

Idle Channel Noise

2-Wire and 4-Wire

C-Message, (Note 3)

-

-

5

dBrnC

Psophometric

-

-

-85

dBmp

3kHz Flat

-

-

16

dBrn

-

15.8

-

V

Power Supply Rejection Ratio

20

40

-

dB

20

40

-

dB

20

40

-

dB

20

50

-

dB

30

40

-

dB

20

28

-

dB

20

50

-

dB

20

50

-

dB

Ring Sync Pulse Width

50

-

500

µs

DC PARAMETERS

Loop Current Programming

Limit Range

20

-

60

mA

Accuracy

10

-

-

%

Loop Current During Power Denial

-

±4

±7mA

Fault Currents

TIP to Ground

-30-

mA

RING to Ground

-

120

-

mA

TIP and RING to Ground

-

150

-

mA

Switch Hook Detection Threshold

-12

15

mA

Ground Key Detection Threshold

-10-

mA

Thermal ALM Output

Safe Operating Die Temperature Exceeded

140

-

160

Ring Trip Detection Threshold

-

10

-

mA

Ring Trip Detection Period

-

100

150

ms

Dial Pulse Distortion

-

0.1

0.5

ms

Relay Driver Outputs

-

0.2

0.5

V

Off Leakage Current

-

±10

±100

µA

TTL/CMOS Logic Inputs (F0, F1, RS, TST, PRI)

-

-

0.8

V

2.0

-

5.5

V

Input Current (F0, F1, RS, TST, PRI)

0V

-

-

±100

µA

Logic Outputs

-

0.1

0.5

V

2.7

-

-

V

Over Operating Positive and Negative Battery Voltages and Over the Operating Temperature Range. All

Parameters are Specified at 600W 2-Wire Terminating Impedance, Unless Otherwise Specified (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

HC-5524