ST3237EB 데이터 시트보기 (PDF) - STMicroelectronics

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ST3237EB

± 15 kV ESD protected, 1 µA, 3 to 5.5 V, 250 kbps RS-232 transceiver with stand-by

STMicroelectronics 

Electrical characteristics

3

Electrical characteristics

ST3237EB

Table 5.

Symbol

Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless

otherwise specified. Typical values are referred to TA = 25 °C)

Parameter

Test conditions

Min. Typ. Max. Unit

ISUPPLY

ISHDN

VCC power supply current SHDN=VCC, No Load

Shutdown supply current SHDN=GND, VT_IN=GND or VCC

0.3

1

mA

1

5

µA

Table 6.

Symbol

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

specified. Typical values are referred to TA = 25 °C)

Parameter

Test conditions

Min. Typ. Max. Unit

VTIL

Input logic threshold low

(1)

T-IN, VHSCI, EN, SHDN

0.8

V

VCC = 3.3V

2

VTIH Input logic threshold high T-IN, VHSCI, EN, SHDN

VCC = 5V

2.4

IIL

Input leakage current

T-IN, VHSCI, EN, SHDN

VHYS

Transmitter input

hysteresis

1. Transmitter input hysteresis is typically 250 mV

V

± 1.0 µA

0.25

V

Table 7.

Symbol

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

unless otherwise specified. Typical values are referred to TA = 25 °C)

Parameter

Test conditions

Min. Typ. Max. Unit

VTOUT

RTOUT

ISC

ITOL

Output voltage swing

All transmitter outputs are loaded with

3KΩ to GND

±5

Transmitter output

resistance

VCC = 0V, VOUT = ± 2V

300

Output short circuit current

Output leakage current

VCC = 0V or 3.3V to 5.5V

VOUT = ± 12V

Transmitters disable

± 5.4

10M

± 60

V

Ω

mA

± 25 µA

6/18

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