SP3243B datasheet(3/24 Pages) SIPEX

3 / 24 page

Rev. 6/30/03

SP3223B/3243B +3.0V to +5.5V RS-232 Transceivers

SPECIFICATIONS (continued)

Unless otherwise noted, the following specifications apply for V

CC = +3.0V to +5.5V with TAMB = TMIN to TMAX,

C1 - 4 = 0.1

µF. Typical values apply at V

CC = +3.3V or +5.0V and TAMB = 25°C.

PARAMETER

MIN.

TYP.

MAX. UNITS CONDITIONS

RECEIVER INPUTS

Input Voltage Range

-25

Input Threshold LOW

0.6

1.2

VCC = 3.3V

Input Threshold LOW

0.8

1.5

VCC = 5.0V

Input Threshold HIGH

1.5

2.4

VCC = 3.3V

Input Threshold HIGH

1.8

2.4

VCC = 5.0V

Input Hysteresis

0.3

Input Resistance

kΩ

AUTO ON-LINE® CIRCUITRY CHARACTERISTICS (ONLINE = GND, SHUTDOWN = VCC)

STATUS Output Voltage LOW

0.4

IOUT = 1.6mA

STATUS Output Voltage HIGH

VCC - 0.6

IOUT = -1.0mA

Receiver Threshold to Drivers

Enabled (tONLINE)

200

µs

Figure 20

Receiver Positive or Negative

0.5

µs

Figure 20

Threshold to STATUS HIGH

(tSTSH)

Receiver Positive or Negative

µs

Figure 20

Threshold to STATUS LOW

(tSTSL)

TIMING CHARACTERISTICS

Maximum Data Rate

250

kbps

RL = 3KΩ, CL = 1000pF,

one driver active

Receiver Propagation Delay

tPHL

0.15

µs

Receiver input to Receiver output,

tPLH

0.15

CL = 150pF

Receiver Output Enable Time

200

Normal operation

Receiver Output Disable Time

200

Normal operation

Driver Skew

100

| tPHL - tPLH |, TAMB = 25°C

Receiver Skew

| tPHL - tPLH |

Transition-Region Slew Rate

V/µsVCC= 3.3V, RL = 3KΩ, TAMB = 25°C,

measurements taken from -3.0V to

+3.0V or +3.0V to -3.0V

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