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PARAMETER MEASUREMENT INFORMATION

50

Ω

TEST CIRCUIT

VOLTAGE WAVEFORMS

−3 V

−3 V

3 V

3 V

0 V

3 V

Output

Input

Generator

(see Note B)

3 V

FORCEOFF

RS-232

Output

(see Note A)

SR(tr) +

6 V

t

B. The pulse generator has the following characteristics: PRR = 250 kbit/s (MAX3243C/I) and 1 Mbit/s (MAX3243FC/I),

50

Ω

TEST CIRCUIT

VOLTAGE WAVEFORMS

0 V

3 V

Output

Input

Generator

(see Note B)

3 V

FORCEOFF

RS-232

Output

(see Note A)

B. The pulse generator has the following characteristics: PRR = 250 kbit/s (MAX3243C/I) and 1 Mbit/s (MAX3243FC/I),

50%

50%

1.5 V

1.5 V

TEST CIRCUIT

VOLTAGE WAVEFORMS

50

Ω

−3 V

3 V

Output

Input

Generator

(see Note B)

Output

(see Note A)

3 V or 0 V

FORCEON

3 V

FORCEOFF

1.5 V

1.5 V

50%

50%

TRS3243

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH

±15-kV ESD (HBM) PROTECTION

SLLS806 – JUNE 2007

Figure 1. Driver Slew Rate

Figure 2. Driver Pulse Skew

Figure 3. Receiver Propagation Delay Times

8

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