ST3237BPR datasheet(6/15 Pages) STMICROELECTRONICS

6 / 15 page

Electrical characteristics

ST3237

6/15

Electrical characteristics

Table 3.

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

VCC power supply current

No load

VCC = 3V or 5.0V TA =

25°C

0.5

ISHDN

Shutdown supply current

SHDN=GNDTA = 25°C

µA

Table 4.

Logic input (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

Input logic threshold low

(1)

T-IN, VHSCI, EN, SHDN

0.8

VTIH

Input logic threshold high

(1)

VCC = 3.3V

VCC = 5V

2.4

IIL

Input leakage current

T-IN, VHSCI, EN, SHDN

± 0.01

± 1.0

µA

IOL

Output leakage current

Receiver disabled

± 0.05

± 10

µA

VOL

Output voltage low

IOUT = 1.6mA

0.4

VOH

Output voltage high

IOUT = -1mA

VCC-

0.6

VCC-

0.1

Transmitter input hysteresis is typically 250mV

Table 5.

Transmitter (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

Min.

Typ.

Max.

Unit

VTOUT

Output voltage swing

All transmitter outputs are loaded with

Ω to GND

± 5

± 5.4

RTOUT

Transmitter output

resistance

VCC = V+ = V- = 0VVOUT = ± 2V

3000

ISC

Output short circuit

current

± 25

± 60

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