SP490ECP-L_技术文档

®

SP490E/SP491E

Enhanced Full Duplex RS-485 Transceivers

■ +5V Only

■ Low Power BiCMOS

■ Driver/Receiver Enable (SP491E)

■ RS-485 and RS-422 Drivers/Receivers

■ Pin Compatible with LTC490 and

SN75179 (SP490E)

■ Pin Compatible with LTC491 and

SN75180 (SP491E)

■ Improved ESD Specifications:

±15kV Human Body Model

±15kV IEC1000-4-2 Air Discharge

±8kV IEC1000-4-2 Contact Discharge

Now available in Lead Free

DESCRIPTION…

The SP490E is a low power differential line driver/receiver meeting RS-485 and RS-422

standards up to 10Mbps. The SP491E is identical to the SP490E with the addition of driver

and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,

overwidecommonmoderange.TheSP490Eisavailablein8-pinplasticDIPand8-pinNSOIC

packages for operation over the commercial and industrial temperature ranges. The SP491E

is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial and

industrial temperature ranges.

14 Vcc

13 NC

12 A

NC 1

R

REB

DE

2

3

4

Vcc 1

R 2

R

8 A

11 B

R

7 B

6 Z

10 Z

D 3

D

5

D

5 Y

9 Y

GND 4

GND 6

GND

7

8 NC

SP490E

SP491E

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

1

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at

theseratingsoranyotherabovethoseindicatedintheoperationsections

ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum

rating conditions for extended periods of time may affect reliability.

V_CC....................................................................................................+7V

Input Voltages

Drivers................................................-0.5V to (V_CC+0.5V)

Receivers..................................................................±14V

Output Voltages

Drivers......................................................................±14V

Receivers...........................................-0.5V to (V_CC+0.5V)

Storage Temperature....................................................-65˚C to +150˚

Power Dissipation.....................................................................1000mW

SPECIFICATIONS

T_MINto T_MAXand V_CC= 5V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX. UNITS

CONDITIONS

SP490E DRIVER

DC Characteristics

Differential Output Voltage

GND

2

V_CC

Volts

Unloaded; R = ∞; see Figure 1

With Load; R = 50Ω; (RS-422);

see Figure 1

Differential Output Voltage

Change in Magnitude of Driver

Differential Output Voltage for

Complimentary States

Driver Common-Mode

Output Voltage

Input High Voltage

Input Low Voltage

Input Current

1.5

V_CC

Volts

With Load;R = 27Ω; (RS-485);see Figure1

0.2

3

R = 27Ω or R = 50Ω; see Figure 1

Volts

µA

R = 27Ω or R = 50Ω; see Figure 1

Applies to D

2.0

0.8

±10

Applies to D

Driver Short-Circuit Current

V_OUT= HIGH

V_OUT= LOW

±250 mA

-7V ≤ V_O≤ +12V

SP490E DRIVER

AC Characteristics

Maximum Data Rate

Driver Input to Output

10

20

Mbps

ns

R_DIFF= 54Ω, C_L1= C_L2= 100pF

t_PLH; R_DIFF= 54Ω, C_L1= C_L2= 100pF;

see Figures 3 and 6

t_PHL; R_DIFF= 54Ω, C_L1= C_L2= 100pF;

see Figures 3 and 5

30

5

60

Driver Input to Output

Driver Skew

20

ns

see Figures 3 and 5,

t_SKEW= | t_DPLH- t_DPHL

|

Driver Rise or Fall Time

3

15

40

From 10% to 90%; R_DIFF= 54Ω,

C_L1= C_L2= 100pF; see Figures 3 and 5

SP490E RECEIVER

DC Characteristics

Differential Input Threshold

Input Hysteresis

Output Voltage High

Output Voltage Low

-0.2

3.5

12

+0.2 Volts

mV

-7V ≤ V_CM≤ 12V

V_CM= 0V

I_O= -4mA, V_ID= +200mV

I_O= +4mA, V_ID= -200mV

-7V ≤ V_CM≤ 12V

V_IN= 12V

70

15

Volts

0.4

Volts

Input Resistance

kΩ

±1.0 mA

Input Current (A, B); V_IN= 12V

Input Current (A, B); V_IN= -7V

Short-Circuit Current

-0.8

85

mA

V_IN= -7V

0V ≤ V_O≤ V_CC

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

2

SPECIFICATIONS (continued)

T_MINto T_MAXand V_CC= 5V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX. UNITS

CONDITIONS

SP490E RECEIVER

AC Characteristics

Maximum Data Rate

Receiver Input to Output

10

20

Mbps

45

13

100

ns

t_PLH; R_DIFF= 54Ω,

C_L1= C_L2= 100pF; Figures 3 & 7

t_PHL; R_DIFF= 54Ω,

Receiver Input to Output

20

C_L1= C_L2⁼100pF; Figures 3 & 7

R_DIFF= 54Ω; C_L1= C_L2= 100pF;

Figures 3 & 7

Diff. Receiver Skew It_PLH-t_PHL

I

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25 Volts

Supply Current

900

µA

ENVIRONMENTAL AND

MECHANICAL

Operating Temperature

Commercial (_C_)

Industrial (_E_)

Storage Temperature

Package

0

-40

-65

+70

+85

+150 °C

°C

Plastic DIP (_P)

NSOIC (_N)

A

1k

Test Point

R

Receiver

Output

V

CC

S

1

V

OD

C

1k

RL

V

OC

R

2

B

Figure 1. Driver DC Test Load Circuit

Figure 2. Receiver Timing Test Load Circuit

3V

DE

C

L1

V

CC

S

1

A

B

A

B

DI

R

DIFF

500

Output

RO

Under

L2

Test

C

L

15pF

S

2

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load #2 Circuit

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

3

f = 1MHz; t_R< 10ns; t_F< 10ns

1.5V

+3V

0V

Z

1.5V

DI

t_PLH

t_PHL

1/2V_O

DRIVER

OUTPUT

V_O

Y

t_DPLH

t_DPHL

+

DIFFERENTIAL

OUTPUT

V_O

0V

V_O

–

V_Y– V_Z

t_R

t_F

t_{SKEW =}t_{DPLH -}t_DPHL

|

Figure 5. Driver Propagation Delays

f = 1MHz; t < 10ns; t < 10ns

R

F

+3V

DE

0V

1.5V

t

LZ

ZL

5V

2.3V

A, B

Y, Z

Output normally LOW

Output normally HIGH

0.5V

V

OL

V

OH

A, B

Y, Z

2.3V

0V

t

HZ

ZH

Figure 6. Driver Enable and Disable Times

f = 1MHz; t < 10ns; t < 10ns

R

F

+

–

V

0D2

0V

Y – Z

R

INPUT

0D2

V

OH

1.5V

OUTPUT

V

OL

t

PLH

PHL

t

t t

| PHL - PLH |

SKEW =

Figure 7. Receiver Propagation Delays

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

4

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at

theseratingsoranyotherabovethoseindicatedintheoperationsections

ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum

rating conditions for extended periods of time may affect reliability.

V_CC....................................................................................................+7V

Input Voltages

Logic...................................................-0.5V to (V_CC+0.5V)

Drivers................................................-0.5V to (V_CC+0.5V)

Receivers..................................................................±14V

Output Voltages

Logic...................................................-0.5V to (V_CC+0.5V)

Drivers......................................................................±14V

Receivers...........................................-0.5V to (V_CC+0.5V)

Storage Temperature......................................................-65˚C to +150

Power Dissipation.....................................................................1000mW

SPECIFICATIONS

T_MINto T_MAXand V_CC= 5V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX. UNITS

CONDITIONS

SP491E DRIVER

DC Characteristics

Differential Output Voltage

GND

2

V_CC

Volts

Unloaded; R = ∞ ; see Figure 1

With Load; R = 50Ω; (RS-422);

see Figure 1

Differential Output Voltage

Change in Magnitude of Driver

Differential Output Voltage for

Complimentary States

Driver Common-Mode

Output Voltage

Input HIGH Voltage

Input LOW Voltage

Input Current

1.5

V_CC

Volts

With Load; R = 27Ω; (RS-485);see Figure 1

0.2

3

R = 27Ω or R = 50Ω; see Figure 1

Volts

µA

R = 27Ω or R = 50Ω; see Figure 1

Applies to D, REB, DE

2.0

0.8

±10

Applies to D, REB, DE

Driver Short-Circuit Current

V_OUT= HIGH

V_OUT= LOW

250

mA

-7V ≤ V_O≤ 10V

SP491E DRIVER

AC Characteristics

Maximum Data Rate

Driver Input to Output

10

20

Mbps

ns

R_DIFF= 54Ω, C_L1= C_L2= 100pF

t_PLH; R_DIFF= 54Ω, C_L1= C_L2= 100pF;

see Figures 3 and 5

t_PHL; R_DIFF= 54Ω, C_L1= C_L2= 100pF;

see Figures 3 and 5

30

5

60

10

40

70

Driver Input to Output

20

ns

Driver Skew

see Figures 3 and 5,

t_SKEW= | t_DPLH- t_DPHL

|

Driver Rise or Fall Time

Driver Enable to Output HIGH

Driver Enable to Output LOW

Driver Disable Time from LOW

Driver Disable Time from HIGH

3

15

40

From 10% to 90%; R_DIFF= 54Ω,

C_L1= C_L2= 100pF; see Figures 3 and 5

C_L1= C_L2= 100pF; see Figures

4 and 6; S₂closed

C_L1= C_L2= 100pF; see Figures

4 and 6; S₁closed

C_L1= C_L2= 15pF; see Figures

4 and 6; S₁closed

C_L1= C_L2= 15pF; see Figures

4 and 6; S₂closed

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

5

SPECIFICATIONS (continued)

T_MINto T_MAXand V_CC= 5V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX. UNITS

CONDITIONS

SP491E RECEIVER

DC Characteristics

Differential Input Threshold

Input Hysteresis

Output Voltage HIGH

Output Voltage LOW

Three State (high impedance)

Output Current

-0.2

3.5

+0.2 Volts

mV

-7V ≤ V_CM≤ 12V

V_CM= 0V

I_O= -4mA, V_ID= +200mV

I_O= +4mA, V_ID= -200mV

70

Volts

0.4

Volts

±1

µA

kΩ

0.4V ≤ V_O≤ 2.4V; REB = 5V

-7V ≤ V_CM≤ 12V

Input Resistance

12

15

Input Current (A, B); V_IN= 12V

Input Current (A, B); V_IN= -7V

Short-Circuit Current

±1.0 mA

DE = 0V, V_CC= 0V or 5.25V, V_IN= 12V

DE = 0V, V_CC= 0V or 5.25V, V_IN= -7V

0V ≤ V_O≤ V_CC

-0.8

85

mA

SP491E RECEIVER

AC Characteristics

Maximum Data Rate

Receiver Input to Output

10

20

Mbps

ns

REB = 0V, DE = 5V

t_PLH; R_DIFF= 54Ω,

45

13

100

C_L1= C_L2= 100pF; Figures 3 & 7

t_PHL; R_DIFF= 54Ω,

Receiver Input to Output

20

ns

C_L1= C_L2⁼100pF; Figures 3 & 7

R_DIFF= 54Ω; C_L1= C_L2= 100pF;

Figures 3 & 7

Diff. Receiver Skew It_PLH-t_PHL

I

Receiver Enable to Output LOW

Receiver Enable to Output HIGH

Receiver Disable from LOW

Receiver Disable from HIGH

45

70

ns

C_RL= 15pF; Figures 2 and 8; S₁closed

C_RL= 15pF; Figures 2 and 8; S₂closed

C_RL= 15pF; Figures 2 and 8; S₁closed

C_RL= 15pF; Figures 2 and 8; S₂closed

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25 Volts

Supply Current

900

µA

REB, D = 0V or V_CC; DE = V_CC

SP491E ENVIRONMENTAL

AND MECHANICAL

Operating Temperature

Commercial (_C_)

Industrial (_E_)

Storage Temperature

Package

0

-40

-65

+70

+85

+150 °C

°C

Plastic DIP (_P)

NSOIC (_N)

+3V

RE

0V

1.5V

f = 1MHz; t < 10ns; t < 10ns

R

F

t

LZ

ZL

5V

R

1.5V

Output normally LOW

Output normally HIGH

0.5V

V

IL

V

IH

R

1.5V

0V

t

HZ

ZH

Figure 8. Receiver Enable and Disable Times

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

6

FEATURES

Receivers

The SP490E and SP491E are full-duplex dif-

ferentialtransceiversthatmeettherequirements

of RS-485 and RS-422. Fabricated with a Sipex

proprietary BiCMOS process, both products

require a fraction of the power of older bipolar

designs.

The receivers for both the SP490E and SP491E

have differential inputs with an input sensitivity

as low as ±200mV. Input impedance of the

receivers is typically 15kΩ (12kΩ minimum).

A wide common mode range of -7V to +12V

allows for large ground potential differences

between systems. The receivers for both the

SP490E and SP491E are equipped with the

fail-safe feature. Fail-safe guarantees that

the receiver output will be in a high state when

the input is left unconnected.

THEORY OF OPERATION

The RS-485 standard is ideal for multi-drop

applications or for long-distance interfaces.

RS-485 allows up to 32 drivers and 32 receivers

to be connected to a data bus, making it an ideal

choice for multi-drop applications. Since the

cabling can be as long as 4,000 feet, RS-485

transceivers are equipped with a wide (-7V to

+12V) common mode range to accommodate

ground potential differences. Because RS-485

is a differential interface, data is virtually

immune to noise in the transmission line.

The receiver of the SP491E has a receiver

enable control line which is active low. A logic

low on REB (pin 3) of the SP491E will enable

the differential receiver. A logic high on REB

(pin 3) of the SP491E will tri-state the receiver.

ESD Tolerance

The SP490E/SP491E devices incorporate

ruggedized ESD cells on all driver output

and receiver input pins. The ESD structure is

improved over our previous family for more

rugged applications and environments sensitive

to electro-static discharges and associated

transients. The improved ESD tolerance is at

least ±15kV without damage nor latch-up.

Drivers

The drivers for both the SP490E and SP491E

have differential outputs. The typical voltage

output swing with no load will be 0 volts to +5

volts. With worst case loading of 54Ωacross the

differential outputs, the driver can maintain

greater than 1.5V voltage levels.

The driver of the SP491E has a driver enable

controllinewhichisactivehigh. Alogichighon

DE (pin 4) of the SP491E will enable the differ-

ential driver outputs. A logic low on DE (pin 4)

of the SP491E will tri-state the driver outputs.

The SP490E does not have a driver enable.

R

S

R

C

SW2

SW1

Device

Under

Test

DC Power

Source

C

S

Figure 9. ESD Test Circuit for Human Body Model

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

7

Contact-Discharge Module

R

S

R

V

C

SW2

SW1

Device

Under

Test

DC Power

Source

C

S

R

and R add up to 330Ω for IEC1000-4-2.

S

V

Figure 10. ESD Test Circuit for IEC1000-4-2

There are different methods of ESD testing

applied:

equipmentthatareaccessibletopersonnelduring

normal usage. The transceiver IC receives most

of the ESD current when the ESD source is

applied to the connector pins. The test circuit for

IEC1000-4-2 is shown on Figure 10. There are

two methods within IEC1000-4-2, the Air

Discharge method and the Contact Discharge

method.

a) MIL-STD-883, Method 3015.7

b) IEC1000-4-2 Air-Discharge

c) IEC1000-4-2 Direct Contact

The Human Body Model has been the generally

acceptedESDtestingmethodforsemiconductors.

This method is also specified in MIL-STD-883,

Method 3015.7 for ESD testing. The premise of

this ESD test is to simulate the human body’s

potential to store electro-static energy and

discharge it to an integrated circuit. The

simulation is performed by using a test model as

showninFigure9. ThismethodwilltesttheIC’s

capability to withstand an ESD transient during

normal handling such as in manufacturing areas

where the ICs tend to be handled frequently.

With the Air Discharge Method, an ESD voltage

is applied to the equipment under test (EUT)

throughair. Thissimulatesanelectricallycharged

30A

15A

0A

The IEC-1000-4-2, formerly IEC801-2, is

generallyusedfortestingESDonequipmentand

systems. For system manufacturers, they must

guarantee a certain amount of ESD protection

since the system itself is exposed to the outside

environment and human presence. The premise

with IEC1000-4-2 is that the system is required

to withstand an amount of static electricity when

ESD is applied to points and surfaces of the

t=0ns

t=30ns

t ➙

Figure 11. ESD Test Waveform for IEC1000-4-2

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

8

person ready to connect a cable onto the rear of

the system only to find an unpleasant zap just

before the person touches the back panel. The

high energy potential on the person discharges

through an arcing path to the rear panel of the

system before he or she even touches the system.

This energy, whether discharged directly or

through air, is predominantly a function of the

discharge current rather than the discharge

voltage. Variables with an air discharge such as

approach speed of the object carrying the ESD

potential to the system and humidity will tend to

change the discharge current. For example, the

rise time of the discharge current varies with the

approach speed.

The circuit models in Figures 9 and 10 represent

the typical ESD testing circuits used for all three

methods. TheC_SisinitiallychargedwiththeDC

power supply when the first switch (SW1) is on.

Now that the capacitor is charged, the second

switch(SW2)isonwhileSW1switchesoff. The

voltage stored in the capacitor is then applied

throughR_S, thecurrentlimitingresistor, ontothe

device under test (DUT). In ESD tests, the SW2

switch is pulsed so that the device under test

receives a duration of voltage.

Forthe HumanBodyModel, the current limiting

resistor (R_S) and the source capacitor (C_S) are

1.5kΩ an 100pF, respectively. For IEC-1000-4-

2,thecurrentlimitingresistor(R_S)andthesource

capacitor (C_S) are 330Ω an 150pF, respectively.

The Contact Discharge Method applies the ESD

current directly to the EUT. This method was

devised to reduce the unpredictability of the

ESD arc. The discharge current rise time is

constant since the energy is directly transferred

without the air-gap arc. In situations such as

handheldsystems,theESDchargecanbedirectly

dischargedtotheequipmentfromapersonalready

holdingtheequipment. Thecurrentistransferred

ontothekeypadortheserialportoftheequipment

directly and then travels through the PCB and

finally to the IC.

The higher C_Svalue and lower R_Svalue in the

IEC1000-4-2 model are more stringent than the

HumanBodyModel. Thelargerstoragecapacitor

injects a higher voltage to the test point when

SW2 is switched on. The lower current limiting

resistor increases the current charge onto the test

point.

SP490E/SP491E HUMAN BODY

IEC1000-4-2

Family

MODEL

Air Discharge

Direct Contact

Level

Driver Outputs

Receiver Inputs

±15kV

±8kV

4

Table 1. Transceiver ESD Tolerance Levels

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

9

PACKAGE: PLASTIC

DUAL–IN–LINE

(NARROW)

E1

E

D1 = 0.005" min.

(0.127 min.)

A1 = 0.015" min.

(0.381min.)

D

A = 0.210" max.

(5.334 max).

C

A2

Ø

L

B1

B

e

= 0.300 BSC

(7.620 BSC)

e = 0.100 BSC

(2.540 BSC)

A

ALTERNATE

END PINS

(BOTH ENDS)

DIMENSIONS (Inches)

Minimum/Maximum

(mm)

8–PIN

14–PIN

16–PIN

18–PIN

20–PIN

22–PIN

0.115/0.195

(2.921/4.953)

0.115/0.195

(2.921/4.953)

0.115/0.195

(2.921/4.953)

A2

(2.921/4.953) (2.921/4.953) (2.921/4.953)

0.014/0.022

(0.356/0.559)

0.014/0.022

(0.356/0.559)

0.014/0.022

(0.356/0.559)

B

(0.356/0.559) (0.356/0.559) (0.356/0.559)

0.045/0.070 0.045/0.070 0.045/0.070

0.045/0.070

B1

C

(1.143/1.778) (1.143/1.778) (1.143/1.778)

(1.143/1.778)

0.008/0.014 0.008/0.014 0.008/0.014

0.008/0.014

(0.203/0.356)

0.008/0.014

(0.203/0.356)

0.008/0.014

(0.203/0.356)

(0.203/0.356) (0.203/0.356) (0.203/0.356)

0.355/0.400 0.735/0.775 0.780/0.800

0.880/0.920

0.980/1.060

1.145/1.155

D

(9.017/10.160) (18.669/19.685) (19.812/20.320) (22.352/23.368) (24.892/26.924) (29.083/29.337)

0.300/0.325

(7.620/8.255)

0.300/0.325

(7.620/8.255)

0.300/0.325

(7.620/8.255)

E

(7.620/8.255) (7.620/8.255) (7.620/8.255)

0.240/0.280 0.240/0.280 0.240/0.280

0.240/0.280

E1

L

(6.096/7.112) (6.096/7.112) (6.096/7.112)

(6.096/7.112)

0.115/0.150 0.115/0.150 0.115/0.150

(2.921/3.810) (2.921/3.810) (2.921/3.810)

0.115/0.150

(2.921/3.810)

0.115/0.150

(2.921/3.810)

0.115/0.150

(2.921/3.810)

0°/ 15°

(0°/15°)

0°/ 15°

(0°/15°)

0°/ 15°

(0°/15°)

0°/ 15°

(0°/15°)

0°/ 15°

(0°/15°)

0°/ 15°

(0°/15°)

Ø

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

10

PACKAGE: PLASTIC

SMALL OUTLINE (SOIC)

(NARROW)

E

H

h x 45°

D

A

Ø

A1

L

e

B

DIMENSIONS (Inches)

Minimum/Maximum

(mm)

8–PIN

0.053/0.069

14–PIN

16–PIN

A

A1

B

D

E

0.053/0.069

(1.346/1.748) (1.346/1.748) (1.346/1.748)

0.053/0.069

0.004/0.010

(0.102/0.249

0.004/0.010

(0.102/0.249) (0.102/0.249)

0.004/0.010

0.014/0.019

(0.35/0.49)

0.013/0.020

(0.330/0.508) (0.330/0.508)

0.013/0.020

0.189/0.197

(4.80/5.00)

0.337/0.344 0.386/0.394

(8.552/8.748) (9.802/10.000)

0.150/0.157 0.150/0.157

0.150/0.157

(3.802/3.988) (3.802/3.988) (3.802/3.988)

e

0.050 BSC

(1.270 BSC)

0.050 BSC

(1.270 BSC)

0.050 BSC

(1.270 BSC)

H

h

0.228/0.244

(5.801/6.198) (5.801/6.198) (5.801/6.198)

0.010/0.020

(0.254/0.498) (0.254/0.498) (0.254/0.498)

0.010/0.020

L

0.016/0.050 0.016/0.050 0.016/0.050

(0.406/1.270) (0.406/1.270) (0.406/1.270)

Ø

0°/8°

(0°/8°)

0°/8°

(0°/8°)

0°/8°

(0°/8°)

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

11

ORDERING INFORMATION

Model

Temperature Range

Package

SP490ECN. ...................................................... 0˚C to +70˚C..................................................... 8-Pin NSOIC

SP490ECP........................................................ 0˚C to +70˚C........................................................... 8-Pin DIP

SP490EEN...................................................... -40˚C to +85˚C ................................................... 8-Pin NSOIC

SP490EEP ...................................................... -40˚C to +85˚C ......................................................... 8-Pin DIP

SP491ECN ....................................................... 0˚C to +70˚C................................................... 14-Pin NSOIC

SP491ECP........................................................ 0˚C to +70˚C......................................................... 14-Pin DIP

SP491EEN...................................................... -40˚C to +85˚C ................................................. 14-Pin NSOIC

SP491EEP ...................................................... -40˚C to +85˚C ....................................................... 14-Pin DIP

Please consult the factory for pricing and availability on a Tape-On-Reel option.

Now available in Lead Free. To order add "-L' to the part number.

Example: SP488A = normal, SP488A-L = Lead free

Co rp o ra tio n

SIGNAL PROCESSING EXCELLENCE

Sipex Corporation

Headquarters and

Sales Office

22 Linnell Circle

Billerica, MA 01821

TEL: (978) 667-8700

FAX: (978) 670-9001

e-mail: sales@sipex.com

Sales Office

233 South Hillview Drive

Milpitas, CA 95035

TEL: (408) 934-7500

FAX: (408) 935-7600

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the

application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

12


型号：	SP490ECP-L
厂家：	SIPEX CORPORATION
描述：	Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, BICMOS, PDIP8, LEAD FREE, PLASTIC, DIP-8 驱动信息通信管理光电二极管接口集成电路驱动器
文件：	总12页 (文件大小：138K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SP490ECP-L [SIPEX]

相关型号：

SP490EEN

SP490EEN-L

SP490EEN-L/TR

SP490EEN-L/TR

SP490EEP

SP490EEP-L

SP490EN

SP490EN

SP490EN-L

SP490EN-L

SP490EN-L/TR

SP490EN/TR