Detailed Description

The MAX3180E–MAX3183E are EIA/TIA-232 and V.28/

V.24 communications receivers that convert RS-232

signals to CMOS logic levels. They operate on a +3V to

+5.5V supply, have 1.5Mbps data rate capability, and

feature enhanced electrostatic discharge (ESD) protec-

tion (see

ESD Protection). All of these devices achieve

a typical supply current of 0.5µA. The MAX3180E/

MAX3182E have a receiver enable control (EN). The

MAX3181E/MAX3183E contain a signal invalid output

(INVALID). The MAX3180E/MAX3181E invert the ROUT

signal relative to RIN (standard RS-232). The

MAX3182E/MAX3183E outputs are not inverted. The

devices come in tiny SOT23-5 packages.

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

4

_______________________________________________________________________________________

25

35

30

45

40

55

50

60

3.0

3.5

4.0

4.5

5.0

5.5

50%

50%

50%

0

RIN

5V

ROUT

50%

Typical Operating Characteristics (continued)

5V

0

10V

0

-10V

RIN

ROUT

ENABLE

5V

0

500ns/div

MAX3180E

ENABLE ASSERTION TO ROUT RESPONSE

1

EN

Receiver Output Enable

Pin Description

NAME

EN

MAX3180E

FUNCTION

MAX3182E

PIN

–

Output of the Valid Input Detector

–

2

GND

Ground

GND

3

ROUT

Inverting Receiver Output

–

4

RIN

Receiver Input

RIN

5

Supply Voltage

Figure 1. Receiver Propagation-Delay Timing

–

Noninverting Receiver Output

ROUT

MAX3181E

MAX3183E

–

INVALID

GND

ROUT

–

RIN

–

INVALID

GND

–

ROUT

RIN