MAX3243

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

SLLS350B – APRIL 1999 – REVISED JANUARY 2000

6

POST OFFICE BOX 655303

RECEIVER SECTION

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 3 and Figure 6)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH

High-level output voltage

IOH = –1 mA

VCC – 0.6 V

VCC – 0.1 V

V

VOL

Low-level output voltage

IOL = 1.6 mA

0.4

V

VIT

Positive going input threshold voltage

VCC = 3.3 V

1.6

2.4

V

VIT+

Positive-going input threshold voltage

VCC = 5 V

1.9

2.4

V

VIT

Negative going input threshold voltage

VCC = 3.3 V

0.6

1.1

V

VIT–

Negative-going input threshold voltage

VCC = 5 V

0.8

1.4

V

Vhys

Input hysteresis (VIT+ – VIT–)

0.5

V

Ioff

Output leakage current (except ROUT2B)

FORCEOFF = 0 V

±0.05

±10

µA

ri

Input resistance

VI = ±3 V to ±25 V

3

5

7

k

Ω

† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.

NOTE 3. Test conditions are C1–C4 = 0.1

µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 3)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

CL = 150 pF See Figure 3

150

ns

tPHL

Propagation delay time, high- to low-level output

CL = 150 pF, See Figure 3

150

ns

ten

Output enable time

CL = 150 pFRL =3kΩ See Figure 4

200

ns

tdis

Output disable time

CL = 150 pF, RL = 3 kΩ, See Figure 4

200

ns

tsk(p)

Pulse skew‡

See Figure 3

50

ns

† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.

‡ Pulse skew is defined as |tPLH – tPHL| of each channel of the same device.

NOTE 3. Test conditions are C1–C4 = 0.1

µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.