L9219A データシートの表示（PDF） - Agere -> LSI Corporation

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L9219A

Low-Cost Line Interface with Reverse Battery and Dual Current Limit

Agere -> LSI Corporation 

L9219A/G Low-Cost Line Interface

with Reverse Battery and Dual Current Limit

Data Sheet

November 2001

Electrical Characteristics (continued)

Table 8. Logic Inputs and Outputs

All outputs are open collectors with internal, 30 kΩ pull-down resistor. Input pins have internal pull-down or some

method to power up in the disconnect state.

Parameter

Input Voltages:

Low Level (permissible range)

High Level (permissible range)

Input Currents:

Low Level (VCC = 5.25 V, VI = 0.4 V)

High Level (VCC = 5.25 V, VI = 2.4 V)

Output Voltages (open collector with internal pull-up resistor):

Low Level (VCC = 4.75 V, IOL = 200 µA)

High Level (VCC = 4.75 V, IOH = –20 µA)

Symbol Min Typ Max Unit

VIL

–0.5 0.4 0.7

V

VIH

2.0 2.4 VCC

V

IIL

0

+4 +10 µA

IIH

+10 +24 +50 µA

VOL

0

0.2 0.4

V

VOH

2.4

—

VCC

V

Ring Trip Requirements

s Ringing signal:

TIP

— Voltage, minimum 35 Vrms, maximum 100 Vrms.

— Frequency, 17 Hz to 33 Hz.

— Crest factor, 1.2 to 1.6.

s Ring trip:

— ≤100 ms (typical).

TIP

s Pretrip:

— The circuits in Figure 3 will not cause ring trip.

8 µF

10 kΩ

RING

2 µF

100 Ω

Figure 3. Ring Trip Circuits

RING

12-2572 (F).f

12

Agere Systems Inc.

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