LTC489 datasheet(3/12 Pages) LINER

Part #	LTC489

Description	Quad RS485 Line Receiver

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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3 / 12 page

LTC488/LTC489

3

4889fb

DC ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VCC = 5V (Notes 2, 3), unless otherwise noted.

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC488CN#PBF

LTC488CN#TRPBF

LTC488CN

16-Lead Plastic DIP

0°C to 70°C

LTC488CSW#PBF

LTC488CSW#TRPBF

LTC488CSW

16-Lead Plastic SO

0°C to 70°C

LTC488IN#PBF

LTC488IN#TRPBF

LTC488IN

16-Lead Plastic DIP

–40°C to 85°C

LTC488ISW#PBF

LTC488ISW#TRPBF

LTC488ISW

16-Lead Plastic SO

–40°C to 85°C

LTC489CN#PBF

LTC489CN#TRPBF

LTC489CN

16-Lead Plastic DIP

0°C to 70°C

LTC489CSW#PBF

LTC489CSW#TRPBF

LTC489CSW

16-Lead Plastic SO

0°C to 70°C

LTC489IN#PBF

LTC489IN#TRPBF

LTC489IN

16-Lead Plastic DIP

–40°C to 85°C

LTC489ISW#PBF

LTC489ISW#TRPBF

LTC489ISW

16-Lead Plastic SO

–40°C to 85°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VINH

Input High Voltage

EN, EN, EN12, EN34

l

2.0

V

VINL

Input Low Voltage

EN, EN, EN12, EN34

l

0.8

V

IIN1

Input Current

EN, EN, EN12, EN34

l

±2

μA

IIN2

Input Current (A, B)

VCC = 0V or 5.25V, VIN = 12V

VCC = 0V or 5.25V, VIN = – 7V

l

1.0

–0.8

mA

VTH

Differential Input Threshold Voltage for Receiver

–7V ≤ VCM ≤ 12V

l

–0.2

0.2

V

ΔVTH

Receiver Input Hysteresis

VCM = 0V

60

mV

VOH

Receiver Output High Voltage

IO = –4mA, VID = 0.2V

l

3.5

V

VOL

Receiver Output Low Voltage

IO = 4mA, VID = –0.2V

l

0.4

V

IOZR

Three-State Output Current at Receiver

VCC = Max 0.4V ≤ VO ≤ 2.4V

l

±1

μA

ICC

Supply Current

No Load, Digital Pins = GND or VCC

l

710

mA

RIN

Receiver Input Resistance

–7V ≤ VCM ≤ 12V, VCC = 0V

l

12

kΩ

IOSR

Receiver Short-Circuit Current

0V ≤ VO ≤ VCC

l

785

mA

tPLH

Receiver Input to Output

CL = 15pF (Figures 1, 3)

l

12

28

55

ns

tPHL

Receiver Input to Output

CL = 15pF (Figures 1, 3)

l

12

28

55

ns

tSKD

| tPLH – tPHL |

Differential Receiver Skew

CL = 15pF (Figures 1, 3)

4

ns

Note 2: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to device ground unless

otherwise speciﬁed.

Note 3: All typicals are given for VCC = 5V and TA = 25°C.

The

l denotes the speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at TA = 25°C.

VCC = 5V ± 5% (Notes 2, 3), unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tZL

Receiver Enable to Output Low

CL = 15pF (Figures 2, 4) S1 Closed

l

30

60

ns

tZH

Receiver Enable to Output High

CL = 15pF (Figures 2, 4) S2 Closed

l

30

60

ns

tLZ

Receiver Disable from Low

CL = 15pF (Figures 2, 4) S1 Closed

l

30

60

ns

tHZ

Receiver Disable from High

CL = 15pF (Figures 2, 4) S2 Closed

l

30

60

ns

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