MAX3040ESE+T Datasheet MAX3045BESE+T, MAX3040EWE+, MAX3041EUE+ | P4-P6

MAX3040–MAX3045

±10kV ESD-Protected, Quad 5V RS-485/RS-422

Transmitters

4 _______________________________________________________________________________________

Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device

ground unless otherwise noted.

Note 2: ∆V

and ∆V

are the changes in V

and V

, respectively, when the transmitter input changes state.

Note 3: This input current level is for the hot-swap enable (EN_, EN, EN) inputs and is present until the first transition only. After the

first transition the input reverts to a standard high-impedance CMOS input with input current I

. For the first 20µs the input

current may be as high as 1mA. During this period the input is disabled.

Note 4: Maximum current level applies to peak current just prior to foldback-current limiting. Minimum current level applies during

current limiting.

SWITCHING CHARACTERISTICS—MAX3041/MAX3044 (continued)

= +5V ±5%, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

= +5V and T

= +25°C.)

SWITCHING CHARACTERISTICS—MAX3042B/MAX3045B

= +5V ±5%, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

= +5V and T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Data Rate f

MAX

Mbps

PLH

23 40

Driver Propagation Delay

PHL

Figures 2 and 3,

DIFF

= 54Ω, C

DIFF

= 50pF

23 40

Driver Differential Output

Rise-Time/Fall-Time

Figures 2 and 3,

DIFF

= 54Ω, C

DIFF

= 50pF

DSKEW

Different chips ±8

Skew Driver to Driver

SSKEW

Same chip

Figures 2 and 3,

DIFF

= 54Ω,

DIFF

= 50pF

±8

Differential Driver Output Skew

| t

PLH

- t

PHL

SKEW

Figures 2 and 3,

DIFF

= 54Ω, C

DIFF

= 50pF

±8ns

Driver Enable to Output High t

MAX3042B, Figures 4 and 5, S2 closed,

= 500Ω, C

= 100pF

300

Driver Enable from Shutdown to

Output High

ZH(SHDN)

Figures 4 and 5, S2 closed,

= 500Ω, C

= 100pF

300

Driver Enable to Output Low t

MAX3042B, Figures 4 and 5, S1 closed,

= 500Ω, C

= 100pF

300

Driver Enable from Shutdown to

Output Low

ZL(SHDN)

Figures 4 and 5, S1 closed,

= 500Ω, C

= 100pF

300

Driver Disable Time from Low t

Figures 4 and 5, S1 closed,

= 500Ω, C

= 15pF

400

Driver Disable Time from High t

Figures 4 and 5, S2 closed,

= 500Ω, C

= 15pF

400

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Driver Enable from Shutdown to

Output High

ZH(SHDN)

Figures 4 and 5, S2 closed,

= 500Ω, C

= 100pF

400

Driver Enable to Output Low t

MAX3041, Figures 4 and 5, S1 closed,

= 500Ω, C

= 100pF

400

Driver Enable from Shutdown to

Output Low

ZL(SHDN)

Figures 4 and 5, S1 closed,

= 500Ω, C

= 100pF

400

Driver Disable Time from Low t

Figures 4 and 5, S1 closed,

= 500Ω, C

= 15pF

500

Driver Disable Time from High t

Figures 4 and 5, S2 closed,

= 500Ω, C

= 15pF

500

MAX3040 toc06

OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

54-6 -5 -4 -2 -1 0 1 2-3 3

-7 6

OUTPUT CURRENT vs. TRANSMITTER

OUTPUT HIGH VOLTAGE

0.7

0.8

1.0

0.9

1.1

1.2

02010 30 40 50 60 70

SUPPLY CURRENT vs. TEMPERATURE

MAX3040 toc04

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

= 5.25V

= 5V

= 4.75V

NO LOAD

NO SWITCHING

100 1000

0.1 1 10

MAX3040/MAX3043

SUPPLY CURRENT vs. DATA RATE

MAX3040 toc01

DATA RATE (kbps)

SUPPLY CURRENT (mA)

NO LOAD

ALL FOUR TRANSMITTERS

SWITCHING

0.1 1 10 100 1000 10,000

MAX3041/MAX3044

SUPPLY CURRENT vs. DATA RATE

MAX3040 toc02

DATA RATE (kbps)

SUPPLY CURRENT (mA)

NO LOAD

ALL FOUR TRANSMITTERS

SWITCHING

MAX3042B/MAX3045B

SUPPLY CURRENT vs. DATA RATE

DATA RATE (kbps)

0.1 100 1000 10,0001 10 100,000

SUPPLY CURRENT (mA)

MAX3040 toc03

NO LOAD

ALL FOUR TRANSMITTERS

SWITCHING

0426810

OUTPUT CURRENT vs. TRANSMITTER

OUTPUT LOW VOLTAGE

MAX3040 toc06

OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

MAX3040–MAX3045

±10kV ESD-Protected, Quad 5V RS-485/RS-422

Transmitters

_______________________________________________________________________________________ 5

Typical Operating Characteristics

= +5V, T

= +25°C, unless otherwise noted.)

021345

OUTPUT CURRENT

vs. DIFFERENTIAL OUTPUT VOLTAGE

MAX3040 toc07

DIFFERENTIAL OUTPUT VOLTAGE (V)

OUTPUT CURRENT (mA)

2.10

2.20

2.15

2.35

2.30

2.25

2.50

2.45

2.40

2.55

0203010 40 50 60 70

TRANSMITTER DIFFERENTIAL OUTPUT

VOLTAGE vs. TEMPERATURE

MAX3040 toc08

TEMPERATURE (°C)

DIFFERENTIAL OUTPUT VOLTAGE (V)

DIFF

= 54Ω

MAX3040–MAX3045

±10kV ESD-Protected, Quad 5V RS-485/RS-422

Transmitters

6 _______________________________________________________________________________________

Pin Description

MAX3040/MAX3041/

MAX3042B

MAX3043/MAX3044/

MAX3045B

NAME

FUNCTION

1 1 T1IN Transmitter 1 Input

2 2 Y1 Noninverting Transmitter 1 Output

3 3 Z1 Inverting Transmitter 1 Output

— 4EN

Transmitter Enable High Input. Drive EN high to enable all four

transmitters. When EN is low and EN is high, all transmitters are

disabled and the part enters a low-power shutdown state. The

transmitter outputs are high impedance when disabled.

4 — EN12

Transmitter Enable Input to Control Transmitters 1 and 2. Drive EN12

high to enable transmitters 1 and 2. Drive EN12 low to disable

transmitters 1 and 2. The transmitter outputs are high impedance

when disabled. The part enters a low-power shutdown state when

both EN12 and EN34 are low.

5 5 Z2 Inverting Transmitter 2 Output

6 6 Y2 Noninverting Transmitter 2 Output

7 7 T2IN Transmitter 2 Input

8 8 GND Ground

9 9 T3IN Transmitter 3 Input

10 10 Y3 Noninverting Transmitter 3 Output

11 11 Z3 Inverting Transmitter 3 Output

— 12 EN

Transmitter Enable Low Input. Drive EN low to enable all four

transmitters. When EN is low and EN is high, all transmitters are

disabled and the part enters a low-power shutdown state. The

transmitter outputs are high impedance when disabled.

12 — EN34

Transmitter Enable Input to Control Transmitters 3 and 4. Drive EN34

high to enable transmitters 3 and 4. Drive EN34 low to disable

transmitters 3 and 4. The transmitter outputs are high impedance

when disabled. The part enters a low-power shutdown state when

both EN12 and EN34 are low.

13 13 Z4 Inverting Transmitter 4 Output

14 14 Y4 Noninverting Transmitter 4 Output

15 15 T4IN Transmitter 4 Input

16 16 V

Positive Supply. Bypass with a 0.1µF capacitor to GND.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

MAX3040ESE+T

Mfr. #:

Buy MAX3040ESE+T

Manufacturer:

Maxim Integrated

Description:

RS-422/RS-485 Interface IC Quad 5V RS-485 RS-422 Trx

Lifecycle:

New from this manufacturer.

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MAX3040ESE+T

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