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ST3241ECD

±15KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN

STMicroelectronics 

ST3241E

ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS

Symbol

Parameter

ESD ESD Protection Voltage

ESD ESD Protection Voltage

Test Conditions

Human Body Model

IEC 1000-4-2 (Contact Discharge)

Min. Typ. Max. Unit

± 15

KV

±8

KV

ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

ISUPPLY Supply Current

ISHDN Shutdown Supply Current

No load VCC = 3.3V or 5V, TA = 25°C

SHDN = GND, TA = 25°C

0.3

1

mA

1

10

µA

LOGIC INPUT AND RECEIVER OUTPUT ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VTIL

VTIH

IIL

Input Logic Threshold Low

Input Logic Threshold High

Input Leakage Current

TIN, EN, SHDN

VCC = 3.3V

VCC = 5V

TIN, EN, SHDN

0.8

V

2

V

2.4

V

± 0.01 ± 1.0 µA

RECEIVER OUTPUT ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

IOL Output Leakage Current

VOL Output Voltage Low

VOH Output Voltage High

ROUT, EN, Receiver Disabled

IOUT = 1.6mA

IOUT = -1mA

± 0.05 ± 10

µA

0.4

V

VCC-0.6 VCC-0.1 V

TRANSMITTER ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VTOUT Output Voltage Swing

All Transmitter outputs are loaded with

± 5 ± 5.4

V

3KΩ to GND

ROUT Output Resistance

VCC = V+ = V- = 0V

VOUT = ± 2V

300 10M

Ω

ISC Output Short Circuit Current VCC = 3.3V

± 35 ± 60 mA

IL Output Leackage Current VCC = 0 to 5.5V, trasmitter output = ± 12V,

trasmitter disabled

± 25 mA

VTO Transmitter Output Voltage T1IN = T2IN = GND, T3IN = VCC

±5

V

T3OUT loaded with 3KΩ to GND

T1OUT and T2OUT loaded with 2.5mA

each

4/10

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