TPD2004F

2006-10-31

4

Truth Table

State

SQUIB

HSD1 HSD2 LSD1 LSD2 SELT SHTD

SQS

ENB

CS

MULTIP

LEXER

ch

DIVIDING

VOLTAGE

SW

SQ1

H

*

L

*

*

*

*

H

*

―

―

Ignition

SQ2

*

H

*

L

*

*

*

H

*

―

―

SQ1

L

L

H

H

L

H

L

H

L

1

―

SQ1

L

L

H

H

H

H

L

H

L

2

―

SQ2

L

L

H

H

L

H

H

H

L

3

―

Short Diagnosis

SQ2

L

L

H

H

H

H

H

H

L

4

―

SS1 Potential Diagnosis

(Not Divided)

SQ1

L

L

H

H

H

L

L

L

L

5

―

SS2 Potential Diagnosis

(Not Divided)

SQ2

L

L

H

H

H

L

H

L

L

7

―

SS1 Potential Diagnosis

(Divided)

SQ1

L

L

H

H

H

L

L

H

L

5

SW1

SS2 Potential Diagnosis

(Divided)

SQ2

L

L

H

H

H

L

H

H

L

7

SW3

SQ-1 Potential

Diagnosis (Not Divided)

SQ1

L

L

H

H

L

L

L

H

L

6

―

SQ-2 Potential

Diagnosis (Not Divided)

SQ2

L

L

H

H

L

L

H

H

L

8

―

SQ-1 Potential

Diagnosis (Divided)

SQ1

L

L

H

H

L

L

L

L

L

6

SW2

SQ-2 Potential

Diagnosis (Divided)

SQ2

L

L

H

H

L

L

H

L

L

8

SW4

SQ1

H

L

H

H

L

L

L

H

L

6

SW2

High-side Driver

Diagnosis

SQ2

L

H

H

H

L

L

H

H

L

8

SW4

SQ1

L

L

L

H

L

L

L

H

L

6

―

Low-side Driver

Diagnosis

SQ2

L

L

H

L

L

L

H

H

L

8

―

*:

Don’t Care

Note:

When ENB input is pulled low, ignition is inhibited.

Note:

When CS is high, the diagnostic inputs SELT, SHTD, and SQS are ignored (in logic) and the AO pin is

placed in the high-impedance state.

Note:

If ignited under shorted condition, the device may break down.