TPIC1021 datasheet(8/13 Pages) TI

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ELECTRICAL CHARACTERISTICS

TPIC1021

LIN Physical Interface

SLIS113 – OCTOBER 2004

SUP = 7 V to 27 V, TA = -40°C to 125°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX

UNIT

SUPPLY

Operational supply voltage(2)

Nominal supply line voltage(2)

VSUP undervoltage threshold(2)

4.5

ICC

Supply Current

Normal Mode, EN = 1, Bus domi-

1.2

2.5

nant (total bus load > 500

Ω)(3)

Standby Mode, EN = 0, Bus domi-

2.1

nant (total bus load > 500

Ω)(3)

Normal Mode, EN = 1, Bus recess-

300

500

µA

ive

Standby Mode, EN = 0, Bus recess-

300

500

µA

ive

Low Power Mode, EN = 0, VSUP <

µA

14 V, NWake = VSUP

Low Power Mode, EN = 0, 14 V <

100

µA

VSUP < 27 V, NWake = VSUP

RXD OUTPUT PIN

Output voltage

-0.3

5.5

IOL

Low-level output current, open drain

LIN = 0 V, RXD = 0.4 V

3.5

IIKG

Leakage current, high-level

LIN = VSUP, RXD = 5 V

-5

µA

TXD INPUT PIN

VIL

Low-level input voltage(2)

-0.3

0.8

VIH

High-level input voltage(2)

5.5

VIT

Input threshold hysteresis voltage(2)

500

Pull-down resistor

125

350

800

Ω

IIL

Low-level input current

TXD = 0

-5

µA

LIN PIN (Referenced to VSUP)

VOH

High-level output voltage(2)

LIN recessive, TXD = High, IO = 0

VSUP-1V

VOL

Low-level output voltage(2)

LIN dominant, TXD = Low, IO = 40

0.2

×V

SUP

Pull-up resistor to VSUP

Ω

Limiting current

TXD = Low

150

250

IIKG

Leakage current

LIN = VSUP

-5

µA

VIL

Low-level input voltage(2)

LIN dominant

VSUP

0.4

×V

SUP

VIH

High-level input voltage(2)

LIN recessive

0.6

×V

SUP

VSUP

VIT

Input threshold voltage(2)

0.4

×V

SUP

0.5

×V

SUP

0.6

×V

SUP

Vhys

Hysteresis voltage(2)

0.05

×V

SUP

0.175

×V

VIL

Low-level input voltage for

0.4

×V

SUP

wake-up(2)

EN PIN

VIL

Low-level input voltage(2)

-0.3

0.8

VIH

High-level input voltage(2)

5.5

Vhys

Hysteresis voltage(2)

500

(1)

Typical values are give for VSUP = 14 V at 25°C.

(2)

All voltages are defined with respect to ground; positive currents flow into the TPIC1021 device.

(3)

In the dominant state the supply current increases as the supply voltage increases due to the integrated LIN slave termination

resistance. At higher voltages the majority of supply current is through the termination resistance. The minimum resistance of the LIN

slave termination is 20 k

Ω so the maximum supply current attributed to the termination is: I

SUP (dom) max termination ≈ (VSUP–

(VLIN_Dominant+0.7V) / 20 kΩ.

TPIC1021 Datasheet(PDF) 8 Page - Texas Instruments

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