SP3222EB 查看數據表（PDF） - Signal Processing Technologies

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SP3222EB

True +3.0V to +5.5V RS-232 Transceivers

Signal Processing Technologies 

SPECIFICATIONS (continued)

Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.5V with TAMB = TMIN to TMAX , C1 to

C4=0.1µF. Typical Values apply at VCC = +3.3V or +5.5V and TAMB = 25oC.

PARAMETER

MIN. TYP. MAX. UNITS CONDITIONS

RECEIVER INPUTS

Input Voltage Range

-25

+25

Input Threshold LOW

0.6 1.2

0.8 1.5

Input Threshold HIGH

1.5 2.4

1.8 2.4

Input Hysteresis

0.3

Input Resistance

3

5

7

TIMING CHARACTERISTICS

Maximum Data Rate

250

Receiver Propagation Delay

0.15

0.15

Receiver Output Enable Time

200

Receiver Output Disable Time

200

Driver Skew

100

Receiver Skew

50

Transition-Region Slew Rate

30

V

V

VCC=3.3V

VCC=5.0V

V

VCC=3.3V

VCC=5.0V

V

kΩ

kbps

µs

ns

RL=3kΩ, CL=1000pF, one driver switching

tPHL, RxIN to RxOUT, CL=150pF

tPLH, RxIN to RxOUT, CL=150pF

ns

ns

ns

V/µs

| tPHL - tPLH |, TAMB = 25oC

| tPHL - tPLH |

V

CC

=

3.3V,

R

L

=

3KΩ,

T

AMB

=

25oC,

measurements taken from -3.0V to +3.0V

or +3.0V to -3.0V

Rev. A Date:12/11/03

SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers

3

© Copyright 2003 Sipex Corporation

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