LT1796 datasheet(6/8 Pages) LINER

部件名	LT1796

功能描述	Overvoltage Fault Protected CAN Transceiver

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制造商	LINER [Linear Technology]

网页	http://www.linear.com

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LT1796

1796f

FU CTIO TABLES

Driver Output

INPUTS

BUS TERMINALS

TXD

RS

CANH

CANL

OPERATING STATE

0VRS < 3V

High

Low

Dominant

0VRS > 4V

Hi-Z

Standby

1VRS < 3V

Hi-Z

Recessive

1VRS > 4V

Hi-Z

Standby

Receiver Output

BUS VOLTAGE

VBUS = VCANH – VCANL

RS

RXD

RESPONSE TIME

VBUS < 0.5V

< 3V

High

Fast

0.5V

≤ VBUS ≤ 0.9V

< 3V

Indeterminate

Fast

VBUS > 0.9V

< 3V

Low

Fast

VBUS < 0.5V

> 4V

High

Slow

0.5V

≤ VBUS ≤ 0.9V

> 4V

Indeterminate

Slow

VBUS > 0.9V

> 4V

Low

Slow

TI I G DIAGRA S

2.5V

VDIFF = VCANH – VCANL

5V

TXD

0V

VDIFF

VDIFFLO

VDIFFHI

25%

50%

1796 F02

tTXDOFF

tTXDON

2.5V

Figure 2. Driver Delay Waveforms

2.5V

5V

TXD

0V

RXD

0V

2V

0.8V

1796 F03

tLBOFF

tLBON

2.5V

Figure 3. Loopback Delay Waveforms

3V

CANL = 2.5V

3.5V

CANH

2.5V

RXD

0.8V

2V

1796 F04

tRXDON

tRXDOFF

3V

Figure 4. Reciever Delay Waveforms

2.5V

5V

RS

0V

RXD

0.8V

1796 F05

tWAKE

Figure 5. Wake Up from Standby Waveforms

TEST CIRCUIT

5V

0.1

µF

7

3

1

46

1796 F01

RS

100pF

28

5

30pF

TXD

RXD

CANH

CANL

RS

VREF

GND

60

Ω

Figure 1. Switching Test Circuit

BLOCK DIAGRA

RX

CANH

CANL

1796 BD

GND

VREF

SLOPE/

STANDBY

REFERENCE

VOLTAGE

DRIVER

VCC

3

7

6

2

5

RXD

4

RS

8

TXD

1

类似零件编号 - LT1796

制造商	部件名	数据表	功能描述
Linear Technology	LT1796	152Kb / 8P	Overvoltage Fault Protected CAN Transceiver
Linear Technology	LT1796	152Kb / 8P	Overvoltage Fault Protected CAN Transceiver

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