MAX3229 datasheet(4/14 Pages) MAXIM

Part #	MAX3229

Description	2.5V to 5.5V RS-232 Transceivers in UCSP

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 14 page

+2.5V to +5.5V RS-232 Transceivers

in UCSP

4

_______________________________________________________________________________________

Note 3: VCC must be greater than VL.

TIMING CHARACTERISTICS

(VCC = +2.5V to +5.5V, VL = +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%, TA = TMIN to TMAX. Typical values are at TA =

+25°C, unless otherwise noted.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Data Rate

RL = 3k

Ω, CL = 1000pF, one transmitter

switching

250

kbps

Receiver Propagation Delay

Receiver input to receiver output,

CL = 150pF

0.15

µs

Receiver Output Enable-Time

VCC = VL= +5V

200

ns

Receiver Output Disable-Time

VCC = VL= +5V

200

ns

Transmitter Skew

| tPHL - tPLH |

100

ns

Receiver Skew

| tPHL - tPLH |50

ns

Transition Region Slew Rate

RL = 3k

Ω to 7kΩ, CL = 150pF to

1000pF, TA = +25

°C

6

30

V/µs

Typical Operating Characteristics

(VCC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k

Ω and CL, TA = +25°C, unless otherwise noted.)

-6

-2

-4

2

0

4

6

0

1500

2000

500

1000

2500

3000

TRANSMITTER OUTPUT VOLTAGE

vs. LOAD CAPACITANCE

LOAD CAPACITANCE (pF)

VOH

VOL

VCC RISING

0

10

5

20

15

25

30

0

2500

3000

SLEW RATE vs. LOAD CAPACITANCE

LOAD CAPACITANCE (pF)

1000

500

1500

2000

VCC = 5.5V

VCC = 2.5V

0

6

4

2

8

10

12

14

16

18

20

0

1000

500

1500

2000

2500

3000

OPERATING SUPPLY CURRENT

vs. LOAD CAPACITANCE (MAX3229)

LOAD CAPACITANCE (pF)

250kbps

20kbps

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MAX3229 Datasheet(PDF) 4 Page - Maxim Integrated Products

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