LTC2879X

2

Rev 0

For more information www.analog.com

ABSOLUTE MAXIMUM RATINGS

Supply Voltages (VCC).................................. –0.3V to 6V

Logic Input Voltages (RE, DE, DI) ................ –0.3V to 6V

Line Interface I/O (A, B) .............................. –60V to 60V

Line Interface I/O Difference (A–B)..........–120V to 120V

Receiver Output (RO)

LTC2879X ....................................–0.3V to VCC + 0.3V

Operating Ambient Temperature Range

LTC2879X .......................................... –55°C to 175°C

Storage Temperature Range .................. –65°C to 150°C

(Notes 1, 2, 5)

ORDER INFORMATION

ELECTRICAL CHARACTERISTICS The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted.

Lead Free Finish

TUBE

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC2879XMS8E#PBF

LTC2879XMS8E#TRPBF

LTHFF

8-Lead Plastic MSOP

–55°C to 175°C

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

Consult ADI Marketing for information on nonstandard 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/. Some packages are available in 500 unit reels through

designated sales channels with #TRMPBF suffix.

LTC2879X

1

2

3

4

RO

RE

DE

DI

8

7

6

5

VCC

B

A

GND

TOP VIEW

9

GND

MS8E PACKAGE

8-LEAD PLASTIC MSOP

TJMAX = 175°C, θJA = 40°C/W, θJC = 10°C/W

EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB

PIN CONFIGURATION

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supplies

VCC

Primary Power Supply

l

3.0

5.5

V

ICCS

LTC2879X Supply Current in Shutdown

Mode

DE = 0V, RE = VCC, DI = VCC

l

0

50

µA

DE = 0V, RE = VCC, DI = 0V

l

12

60

µA

ICCR

Supply Current with Only Receiver

Enabled

No Load, DE = 0V, RE = 0V

l

600

900

µA

ICCD

Supply Current with Only Driver Enabled No Load, DE = RE = VCC

l

700

1100

µA

ICCDR

Supply Current with Both Driver and

Receiver Enabled

No Load, DE = VCC, RE = 0V

l

750

1200

µA

Driver

|VOD(485)|

RS485 Differential Driver Output

Voltage, in Either Logic State

Figure 1 with No Load

l

VCC

V

RL = 27Ω,VCC = 4.5V to 5.5V (Figure 1)

l

1.5

3.4

V

RL = 27Ω,VCC = 3.0V to 3.6V (Figure 1)

l

0.8

1.8

V

|VOD(422)|

RS422 Differential Driver Output

Voltage, Either Logic State

Figure 1 with No Load

l

VCC

V

RL = 50Ω,VCC = 4.5V to 5.5V (Figure 1)

l

2

4

V

RL = 50Ω,VCC = 3.0V to 3.6V (Figure 1)

l

1

2

V

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