ST3237EBD(2005) Ver la hoja de datos (PDF) - STMicroelectronics

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ST3237EBD
(Rev.:2005)

±15KV ESD-PROTECTED, 1µA, 3 TO 5.5V, 250KBPS, RS-232 TRANSCEIVER WITH STAND-BY

STMicroelectronics 

ST3237E

Table 6: 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

ISUPPLY VCC Power Supply Current SHDN=VCC

No Load

ISHDN Shutdown Supply Current SHDN=GNDVT_IN=GND or VCC

Min. Typ. Max. Unit

0.3

1

mA

1

5

µA

Table 7: Logic Input 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

VTIL

VTIH

IIL

VHYS

Input Logic Threshold Low T-IN, VHSCI, EN, SHDN

(Note 1)

Input Logic Threshold High T-IN, VHSCI, EN, SHDN

Input Leakage Current

Transmitter Input

Hysteresis

T-IN, VHSCI, EN, SHDN

VCC = 3.3V

VCC = 5V

Min.

2

2.4

Typ. Max. Unit

0.8

V

V

± 1.0 µA

0.25

V

Note 1: Transmitter input hysteresis is typically 250mV

Table 8: Transmitter Electrical Characteristics

(C1 - C4 = 0.1µF tested at 3.3V±10%, 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

VTOUT

RTOUT

ISC

ITOL

Output Voltage Swing

All Transmitter outputs are loaded with

3KΩ to GND

Transmitter Output Resistance VCC = 0V

VOUT = ± 2V

Output Short Circuit Current

Output Leakage Current

VCC = 0V or 3.3V to 5.5V VOUT = ± 12V

Transmitters Disable

Min.

±5

300

Typ.

± 5.4

10M

± 60

Max. Unit

V

Ω

mA

± 25 µA

Table 9: Receiver Electrical Characteristics

(C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

Typical values are referred to TA = 25°C)

Symbol

Parameter

IOL Output Leakage Current

VOL Output Voltage Low

VOH Output Voltage High

VRIN

VRIL

Receiver Input Voltage

Operating Range

RS-232 Input Threshold

Low

VRIH RS-232 Input Threshold

High

VRIHYS Input Hysteresis

RRIN Input Resistance

4/15

Test Conditions

Min. Typ. Max. Unit

Receiver Disabled

IOUT = 1mA

IOUT = -1mA

EN = VCC

± 0.05 ± 10 µA

0.4

V

VCC-0. VCC-0.1

V

6

-25

25

V

TA = 25°C

TA = 25°C

TA = 25°C

TA = 25°C

VCC = 3.3V

VCC = 5V

VCC = 3.3V

VCC = 5V

TA = 25°C

0.6

1.1

V

0.8

1.5

1.5

2.4

V

1.2

2.4

0.3

V

3

5

7

KΩ

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