SP3244E datasheet(4/22 Pages) SIPEX

4 / 22 page

Rev M 10/9/06

SP3244E-SP3245E, 3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus

ELECTRICAL CHARACTERISTICS

PARAMETERS

SYMB

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

Receiver Inputs

Input Voltage Range

-15

+15

Input Threshold Low

VCC = 3.3V

0.6

1.0

VCC = 5.0V

0.8

1.2

Input Threshold High

VCC = 3.3V

1.2

2.4

VCC = 5.0V

1.7

2.4

Input Hysteresis

200

Input Resistance

TA = 25ºC

4.5

kΩ

Driver Outputs

Output Voltage Swing

All transmitter outputs loaded with

3kΩ to GND

±5.0

±5.6

Output load = Open Circuit

±15.0

Short Circuit Current

Vout = 0V

±60

Power-Off Impedance

VCC = V+ = V- = 0, transmitter

outputs = ±2V

300

10M

Ω

Output Leakage Current

VCC = 0 or 3V to 3.3V, VOUT = ±12V,

Drivers disabled

±25

µA

Mouse Drivability

T1IN = T2IN = GND, T3IN = VCC,

T3 loaded with 3kΩ to GND, T1OUT

and T2OUT loaded with 2.5mA each

±5.0

ESD Protection

IEC 1000-4-2 Air Discharge

±15

ESD Protection for RxIn, TxOut

pins

IEC 1000-4-2 Contact Discharge

±8

Human Body Model

±15

All Other Pins

Human Body Model

±2

Auto On-line® Plus (ONLINE = GND, SHUTDOWN = Vcc)

Rx Input Threshold to

STATUS Output High

±2.7

Rx Input Threshold to

STATUS Output Low

±0.3

Threshold to STATUS High

tSTH

0.4

µs

Threshold to STATUS Low

tSTL

µs

Rx or Tx Transition to

Drivers Enabled

tONLINE

100

µs

Last Rx or Tx Transition to Driv-

ers Disabled

tOFFLINE

Note 1

sec

Note 1: Characterized, not 100% tested.

Unless otherwise noted VCC = +3.0V to +5.5V, TAMB = TMIN to TMAX, C1–C4 = 0.1µF.

Typical values are at TAMB = +25°C, VCC = 3.3V.

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