MAX232CWE+T

+5V-Powered, Multichannel RS-232

Drivers/Receivers

Supply Voltage Range

4.75

5.25

V

Transmitter Enable Time 

MAX225

10

20

t

ET

No load

MAX244–MAX249

11

30

5

10

30

MAX225

40

V

CC

Supply Current 

(Normal Operation)

3k

Ω loads on 

all outputs

MAX244–MAX249

57

mA

Transition Slew Rate

8

25

C

L

= 50pF to 2500pF, R

L

= 3k

Ω to 7kΩ, V

CC

= +5V,

T

A

= +25°C, measured from +3V to -3V or -3V to +3V

T

A

= T

MIN

to T

MAX

CONDITIONS

50

V/µs

MAX246–MAX249 
(excludes charge-pump startup)

Shutdown Supply Current

µA

5

t

PHLT

, Figure 1

1.3

3.5

µs

t

PLHT

, Figure 1

1.5

3.5

Transmitter Disable Time

Transmitter Propagation Delay
TLL to RS-232 (Normal Operation)

µs

t

DT

, Figure 4

100

ns

Transmitter + to - Propagation 
Delay Difference (Normal Operation)

t

PHLT

- t

PLHT

UNITS

MIN

TYP

MAX

350

PARAMETER

ns

Receiver + to - Propagation 
Delay Difference (Normal Operation)

t

PHLR

- t

PLHR

350

ns

4.5

5.5

MAX244–MAX249

MAX225

Leakage current

±1

Logic-low voltage

1.4

0.8

Control Input

Logic-high voltage

2.4

1.4

V

µA

T

A

= +25°C

t

PHLR

, Figure 2

0.6

1.5

t

PLHR

, Figure 2

0.6

1.5

Receiver Propagation Delay
TLL to RS-232 (Normal Operation)

µs

t

PHLS

, Figure 2

0.6

10

t

PLHS

, Figure 2

3.0

10

Receiver Propagation Delay 
TLL to RS-232 (Low-Power Mode)

µs

Receiver-Output Enable Time

t

ER

, Figure 3

100

500

ns

Receiver-Output Disable Time

t

DR

, Figure 3

100

500

ns

MAX225/MAX245–MAX249
(includes charge-pump startup)

10

ms

POWER SUPPLY AND CONTROL LOGIC

AC CHARACTERISTICS

Note 7: All units production tested at hot. Specifications over temperature are guaranteed by design.
Note 8: The 300

Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V

CC

=

0V is 10M

Ω as is implied by the leakage specification.

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)

(MAX225, V

CC

= +5.0V ±5%; MAX244–MAX249, V

CC

= +5.0V ±10%, external capacitors C1–C4 = 1µF; T

A

= T

MIN

to T

MAX

; unless

otherwise noted.) (Note 7)

Maxim Integrated

9

MAX220–MAX249

MAX220–MAX249 

MAX232CWE+T Datasheet Related Products:
MAX232CWE+T Information:
Part No.
MAX232CWE+T
Description
IC 2DVR/2RCVR RS232 5V 16-SOIC
File Size
686970 bytes
Page Size
612 x 792 pts (letter)
All Pages
38
Manufacturer
Maxim Integrated
Homepage
http://www.maximintegrated.com/en.html
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