61

FIGURE 10. IDLE CHANNEL NOISE

FIGURE 11. GROUND KEY DETECT

RING TRIP DETECTOR (DT, DR)

Offset Voltage

Source Res = 0

-20

-

20

mV

Input Bias Current

Source Res = 0

-360

-

360

nA

Input Common-Mode Range

Source Res = 0

-

0

V

Input Resistance

Source Res = 0, Unbalanced

1

-

-

M

Ω

Source Res = 0, Balanced

3

-

-

M

Ω

RING RELAY DRIVER

-

0.2

0.6

V

Off-State Leakage Current

-

-

10

µA

DIGITAL INPUTS (E0, E1, C1, C2)

0

-

0.8

V

2-

V

-200

-

-

µA

-100

-

-

µA

Input High Current

-

-

40

µA

DETECTOR OUTPUT (DET)

-

-

0.45

V

2.7

-

-

V

Internal Pull-Up Resistor

10

15

20

k

Ω

Open Circuit State

C1 = C2 = 0

-

26.3

41

mW

On-Hook, Standby

C1 = C2 = 1

-

37.5

57

mW

On-Hook, Active

-

110

216

mW

Off-Hook, Active

-

1.1

1.4

W

TEMPERATURE GUARD

Thermal Shutdown

150

-

180

ο

C

Open Circuit State (C1, 2 = 0, 0)

On-Hook

-

1.3

2.0

mA

-

0.6

0.9

mA

-

0.35

0.55

mA

Standby State (C1, 2 = 1, 1)

On-Hook

-

1.6

2.25

mA

-

0.62

0.9

mA

-

0.55

0.85

mA

Electrical Specifications

number references in the figures refer to the 28 lead PLCC package. (Continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

600k

Ω

300k

Ω

600

Ω

TIP

27

19

RING

28

RSN

16

TIP

27

RSN

16

RING

28

14

41.2k

Ω

41.2k

Ω

1.5

µF

DET

HC5523