ST3243ECTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST3243ECTR

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

STMicroelectronics 

ST3243E

AUTO-POWERDOWN 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, FORCEON = GND, FORCEOFF = VCC)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VRITE

VRITD

VIOL

VIOH

tWU

tINVH

tINVL

Receiver Input Threshold to Positive Threshold

INVALID Output Voltage

HIGH (Fig. 1)

Negative Threshold

Receiver Input Threshold to

INVALID Output Voltage

LOW (Fig. 1)

INVALID Output Voltage

LOW

IOUT = 1.6mA

INVALID Output Voltage

HIGH

IOUT = -1mA

Receiver or Transmitter

Edge Transmitter Enabled

(Fig. 1)

Receiver Positive or

Negative Threshold to

INVALID HIGH (Fig. 1)

Receiver Positive or

Negative Threshold to

INVALID LOW (Fig. 1)

2.7

V

2.7

V

-0.3

0.3

V

0.4

V

VCC-0.6

V

100

µs

0.2

µs

30

µs

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

± 40 ± 60 mA

IL Output Leakage Current VCC = 0 to 5.5V, transmitter output=± 12V,

transmitter disabled

± 25 µA

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

±5

V

T3OUT loaded with 3KΩ to GND

T1OUT and T2OUT loaded with 2.5mA

each

RECEIVER 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

VRIN

VRIL

Receiver Input Voltage

Operating Range

RS-232 Input Threshold

Low

VRIH RS-232 Input Threshold

High

VRIHYS Input Hysteresis

RRIN Input Resistance

TA = 25°C

TA = 25°C

TA = 25°C

TA = 25°C

VCC = 3.3V

VCC = 5.0V

VCC = 3.3V

VCC = 5.0V

TA = 25°C

-25

25

V

0.6

1.1

V

0.8

1.4

1.6

2.4

V

1.9

2.4

0.5

V

3

5

7

KΩ

6/18

Share Link: