TC3085

The TC3085 is a half-duplex RS-485 transceiver with ±15kV IEC 61000-4-2 contact discharge protection. The TC3085 contains one driver and one receiver.

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Features:
• TIA/EIA RS-485/RS-422 Compliant • Integrated Transient Voltage Suppression • ESD Protection: ±15 KV • Data Rates: 500 kbps • Half-duplex Reduced slew rates for low EMI • Common-mode input range: −7 V to +12 V
Mechanical Data:
• SOP8L Package • Molding compound flammability rating: UL 94V-0 • Packaging: Tape and Reel • RoHS/WEEE Compliant
Applications:
• RS-485 Communications • Level Translators • Transceivers for EMI-Sensitive Applications • Industrial Control Local Area Networks • Energy Meter Networks • Lighting Systems

Absolute Maximum Rating

Parameter

Symbol

Rating

Units

Power Supply

VCC

+7

V

Control Input Voltage

/RE, DE

-0.3 to VCC+0.3

V

Transmitter Input Voltage

DI

-0.3 to VCC+0.3

V

Transmitter Output Voltage

A, B

-8 to +13

V

Receiver Input Voltage

A, B

-8 to +13

V

Receiver Output Voltage

RO

-0.3 to VCC+0.3

V

Operating Temperature

--

-40 to +85

 

Electrical Performance (VCC=+5V±5℅, TA=-40℃~+85℃,Typical Values are VCC=+5V and TA=25℃)

Parameter

Symbol

Conditions

MIN

TYP

MAX

UNITS

Power Supply

Vcc

 

4.5

-

5.5

V

Driver

Differential   Driver Output (no load)

VOD1

-

-

-

5

V

Differential Driver Output

VOD2

R=27Ω

1.5

-

-

V

Change in Magnitude of Differential Output Voltage (Note 2)

∆VOD

R=27Ω

-

-

0.2

V

Driver Common-mode Output Voltage

VOC

R=27Ω

-

-

3

V

Change in Magnitude of Common-Mode

Voltage (Note 2)

∆VOC

R=27Ω

-

-

0.2

V

Input High Voltage

VIH1

DE,DI,/RE

2.0

-

-

V

Input Low Voltage

VIL1

DE,DI,/RE

-

-

0.8

V

DI Input Hysteresis

VHYS

-

-

100

-

mV

Input  Current (A and B)

IIN4

DE=GND ,

VCC=GND or 5.25V

VIN = 12V

-

-

125

µA

VIN = -7V

-

-

-75

Driver Short-Circuit Output Current

IOSD

 -7V≦VOUT≦VCC

-100

-

-

mA

0V≦VOUT≦12V

-

-

100

Receiver

Receiver Differential Threshold Voltage

VTH

-7V≦VCM≦12V

-200

-125

-50

mV

Receive Input Hysteresis

△VTH

 

-

40

-

mV

Receiver Output High Voltage

VOH

IO=-4mA,VID=-50mV

VCC-1.5

-

-

V

Receiver Output Low Voltage

VOL

IO=4mA,VID=-200mV

-

-

0.4

V

Three-State Output Current at Receiver

IOZR

0.4V≦VO≦2.4V

-

-

±1

µA

Receive Input Resistance

RIN

-7V≦VCM≦12V

96

-

-

kΩ

Receiver Output Short-Circuit Current

IOSR

0V≦VRO≦VCC

±7

-

±95

mA

Supply Current

Supply Current

 

ICC

No load ;

RE=DI=GND or VCC

DE=VCC

-

150

600

µA

DE=GND

-

185

600

µA

Supply Current in Shutdown Mode

ISHDN

DE=GND, /RE=VCC

DI=VCC or GND

-

-

10

µA


Note 1:All currents into the device are positive. All currents out of the device are negative. All voltages are referred to device ground unless otherwise noted.

Note 2:△VOD and △VOC are the changes in VOD and VOC, respectively, when the DI input changes state.

 

Switeching Characteristics (VCC=+5V±5℅, TA=-40℃~+85℃,Typical Values are VCC=+5V and TA=25℃)

Parameter

Symbol

Conditions

MIN

TYP

MAX

UNITS

Driver Input to Output

T DPLH

RDIFF=54Ω, CL1=CL2=100pF

-

450

800

ns

T DPHL

-

450

800

Driver  Output Skew

|TDPLH – TDPHL|

T DSKEW

RDIFF=54Ω CL1=CL2=100pF

-

-

100

ns

Driver Rise or Fall Time

TDR, TDF

RDIFF=54Ω, CL1=CL2=100pF

-

150

500

ns

Maximum Data Rate

F MAX

-

500

-

-

kbps

Driver Enable to Output High

T DZH

CL=100pF, S2 Closed

-

-

200

ns

Driver Enable to Output

Low

T DZL

CL=100pF, S1 Closed

-

-

200

ns

Driver Disable Time from Low

T DLZ

CL=15pF, S1 Closed

-

-

300

ns

Driver Disable Time from High

T DHZ

CL=15pF, S2 Closed

-

-

300

ns

Receiver Input to Output

T RPLH

T RPHL

|VID| ≥ 2.0V, rise and fall time of VID≦15ns

 

-

450

800

ns

|TRPLH – TRPHL| Differential Receiver Skew

T RSKD

|VID| ≥ 2.0V, rise and fall time ofVID≦15ns

-

30

-

ns

Receiver Enable to Output Low

T RZL

CL=100pF, S1 Closed

-

20

50

ns

Receiver Enable to Output High

T RZH

CL=100pF, S2 Closed

-

20

50

ns

Receiver Disable Time from Low

T RLZ

CL=100pF, S1 Closed

-

80

150

ns

Receiver Disable Time from High

T RHZ

CL=100pF, S2 Closed

-

80

150

ns

Time to Shutdown

T SHDN

-

-

50

300

ns

Driver Enable from Shutdown to Output High

T DZH(SHDN)

CL=15pF, S2 Closed

-

-

200

ns

Driver Enable from Shutdown to Output Low

T DZL(SHDN)

CL=15pF, S1 Closed

-

-

200

ns

Receiver Enable from Shutdown to Output High

T RZH(SHDN)

CL=100pF, S2 Closed

-

-

300

ns

Receiver Enable from Shutdown to Output Low

T RZL(SHDN)

CL=100pF, S1 Closed

-

-

300

ns

 

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