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LTC1685

PACKAGE/ORDER I FOR ATIO

BSOLUTEXI

(Note 1)

Supply Voltage (VDD) .............................................. 10V

Control Input Currents .................... – 100mA to 100mA

Control Input Voltages .................. – 0.5V to VDD + 0.5V

Driver Input Voltages .................... – 0.5V to VDD + 0.5V

Driver Output Voltages .................................. +12V/– 7V

Receiver Input Voltages ................................. +12V/– 7V

Receiver Output Voltages ............. – 0.5V to VDD + 0.5V

Receiver Input Differential ...................................... 10V

Short-Circuit Duration (Driver VOUT: –7V to 10V,

Receiver VOUT: 0V to VDD) ............................... Indefinite

Operating Temperature Range .................... 0

°C to 70°C

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................. 300

°C

ORDER PART

NUMBER

TOP VIEW

VDD

GND

S8 PACKAGE

8-LEAD PLASTIC SO

TJMAX = 125°C, θJA = 150°C/ W

Consult factory for Industrial and Military grade parts.

S8 PART MARKING

DC ELECTRICAL CHARACTERISTICS

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

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOD1

Differential Driver Output (Unloaded)

IOUT = 0

VDD

VOD2

Differential Driver Output (With Load)

R = 50

Ω (RS422)

R = 27

Ω (RS485), Figure 1

1.5

VDD

∆VOD

Change in Magnitude of Driver Differential

R = 27

Ω or 50Ω, Figure 1

0.2

Output Voltage for Complementary

Output States

VOC

Driver Common Mode Output Voltage

R = 27

Ω or 50Ω, VDD = 5V, Figure 1

∆VOC

Change in Magnitude of Driver Common

R = 27

Ω or 50Ω, Figure 1

0.2

Mode Output Voltage for Complementary

Output States

VIH

Input High Voltage

DE, DI, RE

VIL

Input Low Voltage

DE, DI, RE

0.8

IIN1

Input Current

DE, DI, RE

–1

µA

IIN2

Input Current (A, B)

VA, VB = 12V, DE = 0, VDD = 0V or 5.25V

500

µA

VA, VB = – 7V, DE = 0, VDD = 0V or 5.25V

– 500

µA

VTH

Differential Input Threshold Voltage

– 7V

≤ VCM ≤ 12V

– 0.3

0.3

for Receiver

∆VTH

Receiver Input Hysteresis

VCM = 0V

VOH

Receiver Output High Voltage

IOUT = – 4mA, VID = 300mV

3.5

4.8

VOL

Receiver Output Low Voltage

IOUT = 4mA, VID = – 300mV

0.4

IOZR

Three-State (High Impedance) Output

0.4V

≤ VOUT ≤ 2.4V

–1

µA

Current at Receiver

IDD

Supply Current

No Load, Pins 2, 3, 4 = 0V or VDD

712

IOSD1

Driver Short-Circuit Current, VOUT = HIGH

VOUT = – 7V or 10V (Note 5)

IOSD2

Driver Short-Circuit Current, VOUT = LOW

VOUT = – 7V or 10V (Note 5)

IOSR

Receiver Short-Circuit Current

VOUT = 0V or VDD (Note 5)

LTC1685CS8

1685

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