8

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Overvoltage Protection and Longitudinal

Current Protection

The SLIC device, in conjunction with an external protection

bridge, will withstand high voltage lightning surges and

power line crosses.

High voltage surge conditions are as specified in Table 1.

The SLIC will withstand longitudinal currents up to a

performance degradation.

LOGIC GATE SCHEMATIC

15

5

6

12

4

16

13

A

B

C

C

B

A

TTL

TO

STTL

TTL

TO

STTL

TTL

TO

STTL

TO

GKD

SHD

RD

PD

RC

RS

C2

TTL

TO

STTL

TTL

TO

STTL

DELAY

LOGIC BIAS

RELAY

DRIVER

SH

GK

11

14

3

9

7

8

10

2

1

SCHOTTKY LOGIC

TABLE 1.

PARAMETER

TEST

CONDITION

PERFORMANCE

(MAX)

UNITS

Longitudinal

Surge

10

µs Rise/

±1000 (Plastic)

1000

µs Fall

±500 (Ceramic)

Metallic Surge

10

µs Rise/

±1000 (Plastic)

1000

µs Fall

±500 (Ceramic)

T/GND

10

µs Rise/

±1000 (Plastic)

R/GND

1000

µs Fall

±500 (Ceramic)

50/60Hz Current

T/GND

11 Cycles

700 (Plastic)

R/GND

Limited to

350 (Ceramic)

HC-5504B