MAX222 datasheet(6/15 Pages) TI | 5-V DUAL RS-232 LINE DRIVER/RECEIVER WITH +-15-kV ESD PROTECTION

6 page

MAX222

5V DUAL RS232 LINE DRIVER/RECEIVER

WITH ±15kV ESD PROTECTION

SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

Ω

TEST CIRCUIT

VOLTAGE WAVEFORMS

0 V

3 V

Output

Input

VOL

VOH

tPLH (D)

Generator

(see Note B)

RS-232

Output

tPHL (D)

(see Note A)

SR(tr)

PHL (D)

or t

PLH (D)

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.

1.5 V

3 V

−3 V

3 V

−3 V

Figure 1. Driver Slew Rate

TEST CIRCUIT

VOLTAGE WAVEFORMS

0 V

3 V

Output

Input

VOL

VOH

tPLH (D)

tPHL (D)

50%

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.

1.5 V

Ω

Generator

(see Note B)

RS-232

Output

(see Note A)

Figure 2. Driver Pulse Skew

TEST CIRCUIT

VOLTAGE WAVEFORMS

Ω

50%

−3 V

3 V

1.5 V

Output

Input

VOL

VOH

tPHL (R)

Generator

(see Note B)

tPLH (R)

Output

(see Note A)

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.

Figure 3. Receiver Propagation Delay Times

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