MAX14821 datasheet(13/29 Pages) MAXIM

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MAX14821

IO-Link Device Transceiver

Typical Operating Characteristics (continued)

(VCC = 24V, LDOIN = VP, VL = LDO33, C/Q and DO in push-pull configuration, TA = +25NC, unless otherwise noted.)

C/Q SHORT-CIRCUIT PROTECTION

MAX14821 toc13

ISINK

100mA/div

TXEN = VL

TXQ = TXC = VL

tSHORT = 200µs

C/Q

10V/div

40µs

IRQ

2V/div

LDOIN SUPPLY CURRENT

vs. LDOIN VOLTAGE

VLDOIN (V)

12 15 18

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

936

TA = +25°C

TA = +85°C

TA = -40°C

VCC = 36V

C/Q AND DO DRIVERS ENABLED

V5, LDO33 ARE LOADED

TXC = TXQ = LO = VL

V5 LOAD REGULATION

LOAD CURRENT (mA)

-0.45

-0.40

-0.35

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

-0.50

050

TA = +25°C

TA = +85°C

TA = -40°C

LDO33 LOAD REGULATION

LOAD CURRENT (mA)

40 45

5 10

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

-0.7

050

TA = +25°C

TA = +85°C

TA = -40°C

VCC SUPPLY CURRENT

vs. C/Q DATA RATE

C/Q DATA RATE (kbps)

100

11k

VLDOIN = V5 = 5V

TXEN = VL

HiSlew = 1

NO LOAD ON C/Q

VCC = 36V

VCC = 30V

VCC = 24V

VCC SUPPLY CURRENT

vs. VCC VOLTAGE

VCC VOLTAGE (V)

24 27

15 18 21

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

936

TA = +25°C

TA = +85°C

TA = -40°C

VLDOIN = 7V

C/Q AND DO DRIVERS ENABLED

V5, VP UNLOADED

C/Q AND DI CURRENT LOADS OFF

TXC = TXQ = LO = VL

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