SSP3085

Short Description:

The SSP3085 is a half-duplex high speed transceiver for RS-485 and RS422 communication. IC contains one driver and one receiver. The SSP3085 has a fail-safe circuit, ensure logical high level of receiver output when receiver input is open or short. It can achieve error-free data transmission of up to 500kbps. Each driver output and receiver input is protected against ±15kV electrostatic discharge (HBM) (ESD)shocks. The SSP3085 receiver has 1/8 unit load input impedance, allows up to 256 devices can be attached to the bus.

Tags: Active component, Analog IC, Integrated circuit, Related, RS-485 Transceivers, Transceiver IC

Product Detail

Features

I/O pin ESD protection：+15kV HBM, Other pins have level 3 ESD protection：>+8kV HBM
Fractional unit load allows up to 256devices on the bus
+ 5V operating voltage
Data transmission up to 500kbps
Tri-state output
SOP8and DIP8package

Applications

RS-485/RS-422transceiver
Industrial process control
Electric meter
Industrial motor drive
Automatic HVAC system

Parameter table

Absolute Maximum Ratings

Unless specified otherwise, Tamb= 25℃

Parameter	Symbol	Value	Unit
Supply Voltage	V_DD	-0.5~6	V
Input Voltage	V_IN	-0.5~6	V
Output Voltage	V_OUT	GND-0.3~V_DD+0.3	V
A/B Input / Output Voltage	V_INA/B/V_OUTA/B	-7~12	V
Operating Temperature	T_amb	-40~85	℃
Storage Temperature	T_stg	-65~150	℃
Soldering Temperature(10s)	T_sol	300	℃

DC Electrical Characteristics

Unless specified otherwise，V_CC=5V±5%，Tamb= 25℃

Parameter	Symbol	Test Conditions			Min	Typ	Max	Unit
Driver
Differential driver output	V_OD1	No load					5	V
Differential driver output	V_OD2	R=50Ω or 27Ω⁽¹⁾			2.0	3.0		V
Change in magnitude of driver differential output voltage for complementary output states	ΔV_OD	R=50Ω or 27Ω⁽¹⁾					0.2	V
Driver common-mode output voltage	V_OC	R=50Ω or 27Ω⁽¹⁾				V_DD/2	3	V
Change in magnitude of driver common-mode output voltage for complementary output states	ΔV_OC	R=50Ω or 27Ω⁽¹⁾					0.2	V
Input high voltage	V_IH1	DE、、DI			2.0			V
Input low voltage	V_IL1	DE、、DI					0.8	V
Input current	I_IN1	DE、、DI					±2	mA
Input current (A, B)	I_IN2	DE=GND，V_CC= 5V		Vin=5V		40	90	mA
Input current (A, B)	I_IN2	DE=GND，V_CC= 5V		Vin=-0V		60	100	mA
Receiver
Differential threshold voltage	V_TH	-7V≤V_CM≤12V			-250		-10	mV
input hysteresis voltage	ΔV_TH					25		mV
output high voltage	V_OH	I_O=-4mA			V_CC-1.5			V
output low voltage	V_OL	I_O=4mA					0.4	V
3-state(high impedance) output current at receiver	I_OZR	0.4V≤V_O≤2.4V				±1		mA
input resistance	R_IN	-7V≤V_CM≤12V			96			kΩ
Receiver short-circuit current	I_OSR	0V≤V_RO≤V_DD				±80		mA
Supply Current	I_CC	No load，=DI =GND or V_DD	DE=V_DD			480	800	mA
Supply Current	I_CC	No load，=DI =GND or V_DD	DE=GND			450	700	mA
ESD Protection（A/B）	ESD	Human Body Model			±15			kV

Transmission characteristics

Unless specified otherwise，V_CC=5V±5%，Tamb= 25℃

Parameter	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Driver Input to Output	t_DPLH	R_DIFF=50Ω，C_L1=C_L2=100pF⁽³⁾⁽⁶⁾		34	60	ns
Driver Input to Output	t_DPHL	R_DIFF=50Ω，C_L1=C_L2=100pF⁽³⁾⁽⁶⁾		34	60	ns
\|t_DPLH-t_DPHL\|	t_DSKEW	R_DIFF=50Ω，CL1=CL2=100pF⁽³⁾⁽⁶⁾		-2.5	±10	ns
Driver Rise or Fall Time	t_DR,t_DF	R_DIFF=50Ω，C_L1=C_L2=100pF⁽³⁾⁽⁶⁾		14	25	ns
Maximum Data Rate	f_MAX			500		kbps
Driver Enable to Output High	t_DZH	C_L=100pF，S2 closed⁽⁴⁾⁽⁷⁾			150	ns
Driver Enable to Output Low	t_DZL	C_L=100pF，S1 closed⁽⁴⁾⁽⁷⁾			150	ns
Driver Disable Time from Low	t_DLZ	C_L=15pF，S1 closed⁽⁴⁾⁽⁷⁾			100	ns
Driver Disable Time from Low	t_DHZ	C_L=15pF，S2 closed⁽⁴⁾⁽⁷⁾			100	ns
Receiver Input to Output	t_RPLH	\|V_ID\|≥2.0V Rise or Fall Time≤15ns⁽⁵⁾⁽⁸⁾			200	ns
Receiver Input to Output	t_RPHL	\|V_ID\|≥2.0V Rise or Fall Time≤15ns⁽⁵⁾⁽⁸⁾			200	ns
\|t_RPLH-t_RPHL\|	t_RSKD	\|V_ID\|≥2.0V Rise or Fall Time≤15ns⁽⁵⁾⁽⁸⁾		3	±30	ns
Receiver Enable to Output Low	t_RZL	C_L=100pF，S1 closed⁽²⁾⁽⁹⁾		20	50	ns
Receiver Enable to Output High	t_RZH	C_L=100pF，S2 closed⁽²⁾⁽⁹⁾		20	50	ns
Receiver Disable Time from Low	t_RLZ	C_L=100pF，S1 closed⁽²⁾⁽⁹⁾		20	50	ns
Receiver Disable Time from High	t_RHZ	C_L=100pF，S2 closed⁽²⁾⁽⁹⁾		20	50	ns

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Product Detail

Parameter table

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