AM79R79JC datasheet(9/20 Pages) AMD

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SLIC Products

ELECTRICAL CHARACTERISTICS (continued)

RELAY DRIVER SCHEMATIC

Description

Test Conditions (See Note 1)

Min

Typ

Max

Unit

Note

Logic Inputs (C3–C1, D2–D1, E1, and B2EN)

VIH, Input High voltage

2.0

VIL, Input Low voltage

0.8

IIH, Input High current

–75

µA

IIL, Input Low current

–400

Logic Output DET

VOL, Output Low voltage

IOUT = 0.8 mA, 15 kΩ to VCC

0.40

VOH, Output High voltage

IOUT = –0.1 mA, 15 kΩ to VCC

2.4

Ring-Trip Detector Input

Ring detect accuracy

–10

+10

Ring Signal

VAB, Ringing

Bat1 = –75 V, ringload = 1570

Ω

Vpk

VAB Ringing offset

VRINGIN = 2.5 V

–10

∆VAB/∆VRINGIN (RINGIN gain)

150

180

210

Ground-Key Detector Thresholds

Ground-key resistive threshold

B to ground

Ω

Ground-key current threshold

B to ground

Loop Detector

RLTH, Loop-resistance detect threshold

Active, VBAT1

–20

Active, VBAT2

–20

Standby

–12

Relay Driver Output (RELAY1 and 2)

VOL, On voltage (each output)

IOL = 30 mA

+0.25

+0.4

VOL, On voltage (each output)

IOL = 40 mA

+0.30

+0.8

IOH, Off leakage (each output)

VOH = +5 V

100

µA

Zener breakover (each output)

IZ = 100 µA

6.6

7.9

Zener on voltage (each output)

IZ = 30 mA

IRTD

BAT1

–

RRT1

----------------------------24

µA



 335

•

RYOUT1

BGND

RYOUT2

BGND

RYE

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