SP385ACA datasheet(3/9 Pages) SIPEX

Part #	SP385ACA

Description	3V to 5V RS-232 Line Driver/Receiver

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Manufacturer	SIPEX [Sipex Corporation]

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3

SP385ADS/05

SP385A Line Driver/Receiver

PERFORMANCE CURVES

-55

-40

0

25

70

85

125

Temperature (°C)

0

5

10

15

20

25

30

VCC = 6V

VCC = 5V

VCC = 4V

VCC = 3V

4.5

4.75

5.0

5.25

5.5

VCC (Volts)

6.8

7.4

7.6

7.8

8.0

8.2

8.4

Load current = 0mA

TA = 25°C

7.0

7.2

0

5

10

15

20

Load Current (mA)

0

6

8

10

12

2

4

VCC = 5V

VCC = 4V

VCC = 6V

25

30

35

40

0246

8

10

12

14

Load Current (mA)

-3

-4

-5

-6

-7

-8

-9

-10

-11

VCC = 6V

VCC = 5V

VCC = 4V

SPECIFICATIONS

V

CC=+5V±10%; 0.1µF charge pump capacitors; TMIN to TMAX

unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX.

UNITS

CONDITIONS

TTL INPUT

Logic Threshold

Low

0.8

Volts

T

IN ; ON/OFF

High

2.0

Volts

T

IN ; ON/OFF

Logic Pullup Current

15

200

µAT

IN = 0V

Maximum Data Rate

120

kbps

C

L = 2500pF, RL= 3kΩ

TTL OUTPUT

TTL/CMOS Output

Voltage, Low

0.4

Volts

I

OUT = 3.2mA; Vcc = +5V

Voltage, High

3.5

Volts

I

OUT = -1.0mA

Leakage Current; T

A = +25°C

0.05

±10

µA

ON/OFF = O, 0V

≤ V

OUT ≤ VCC

EIA-232 OUTPUT

Output Voltage Swing

±5

±9

Volts

All transmitter outputs loaded

with 3k

Ω to ground

Power-Off Output Resistance

300

Ω

V

CC = 0V; VOUT =

±2V

Output Short Circuit Current

±18

mA

Infinite duration

EIA-232 INPUT

Voltage Range

-15

+15

Volts

Voltage Threshold

Low

0.8

1.2

Volts

V

CC = 5V, TA = +25°C

High

1.7

2.4

Volts

V

CC = 5V, TA = +25°C

Hysteresis

0.2

0.5

1.0

Volts

V

CC = 5V, TA = +25°C

Resistance

3

5

7

k

Ω

V

IN = 15V to –15V

DYNAMIC CHARACTERISTICS

Driver Propagation Delay

4.0

µs

TTL to RS-232

Receiver Propagation Delay

1.5

µs

RS-232 to TTL

Instantaneous Slew Rate

30

V/

µsC

L = 10pF, RL= 3kΩ - 7kΩ;

T

A =+25°C

Transition Region Slew Rate

10

V/

µsC

L = 2500pF, RL= 3kΩ;

measured from +3V to -3V

or -3V to +3V

Output Enable Time

400

ns

Output Disable Time

250

ns

POWER REQUIREMENTS

V

CC Power Supply Current

10

15

mA

No load, T

A= +25°C; VCC = 5V

25

mA

All transmitters R

L = 3kΩ;

T

A

= +25

°C

Shutdown Supply Current

1

10

µAV

CC = 5V, TA = +25°C

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