SP3238ECA Ver la hoja de datos (PDF) - Signal Processing Technologies

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SP3238ECA

Intelligent +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.

Typical values apply at VCC = +3.3V or +5.0V and TAMB = 25°C.

PARAMETER

MIN. TYP. MAX. UNITS CONDITIONS

TIMING CHARACTERISTICS

Maximum Data Rate

Receiver Propagation Delay

tPHL

tPLH

Receiver Output Enable Time

Receiver Output Disable Time

Driver Skew

Receiver Skew

Transition-Region Slew Rate

250

0.15

0.15

200

200

100 500

200 1000

30

kbps RL = 3kΩ, CL = 1000pF, one driver active

µs Receiver input to Receiver output, CL = 150pF

ns Normal operation

ns Normal operation

ns

ns

V/µs

| tPHL - tPLH |, TAMB = 25oC

| tPHL - tPLH |

VCC= 3.3V, RL = 3kΩ, TAMB = 25oC,

measurements taken from -3.0V to +3.0V or

+3.0V to -3.0V

TYPICAL PERFORMANCE CHARACTERISTICS

Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 235Kbps data rate, all drivers

loaded with 3kΩ, 0.1µF charge pump capacitors, and TAMB = +25°C.

14

6

12

4

10

2

Vout+

Vout-

8

0

6

0

500

1000

1500

-2

4

+Slew

-Slew

-4

2

-6

Load Capacitance [pF]

0

0

500

1000

1500

2000

Load Capacitance [pF]

Figure 1. Transmitter Output Voltage VS. Load

Capacitance

Figure 2. Slew Rate VS. Load Capacitance

SP3238EDS/04

SP3238E +3.0V to +5.5V RS-232 Transceivers

4

© Copyright 1999 Sipex Corporation

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