MAX491M datasheet, PDF - EEWORLD Datasheet

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MAX491M: DescriptionLINE TRANSCEIVER, PDIP14; Categorysemiconductor Analog mixed-signal IC; File Size439KB，19 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX491M Overview

LINE TRANSCEIVER, PDIP14

MAX491M Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	14
Minimum operating temperature	0.0 Cel
Maximum operating temperature	70 Cel
Processing package description	PLASTIC, DIP-14
each_compli	Yes
state	Active
Interface Type	LINE TRANSCEIVER
Differential output	YES
Number of drive digits	1
high_level_input_current_max	2.00E-6 Am
Input properties	DIFFERENTIAL SCHMITT TRIGGER
Interface standards	EIA-422; EIA-485
jesd_30_code	R-PDIP-T14
jesd_609_code	e0
moisture_sensitivity_level	1
ut_swing_mi	1.5 V
Output characteristics	3-STATE
utput_low_current_max	0.0040 Am
Output polarity	COMPLEMENTARY
Packaging Materials	PLASTIC/EPOXY
ckage_code	DIP
ckage_equivalence_code	DIP14,.3
packaging shape	RECTANGULAR
Package Size	IN-LINE
eak_reflow_temperature__cel_	245
wer_supplies__v_	5
qualification_status	COMMERCIAL
eceive_delay_max	150 ns
Number of receiver bits	1
seated_height_max	4.57 mm
sub_category	Line Driver or Receivers
Maximum supply voltage	0.5000 mA
Rated supply voltage	5 V
Minimum supply voltage	4.75 V
Maximum supply voltage	5.25 V
surface mount	NO
Craftsmanship	CMOS
Temperature level	COMMERCIAL
terminal coating	TIN LEAD
Terminal form	THROUGH-HOLE
Terminal spacing	2.54 mm
Terminal location	DUAL
ime_peak_reflow_temperature_max__s_	NOT SPECIFIED
smit_delay_max	60 ns
length	19.05 mm
width	7.62 mm
dditional_feature	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER

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19-0122; Rev 8; 10/03

Low-Power, Slew-Rate-Limited

RS-485/RS-422 Transceivers

General Description

The MAX481, MAX483, MAX485, MAX487–MAX491, and

MAX1487 are low-power transceivers for RS-485 and RS-

422 communication. Each part contains one driver and one

receiver. The MAX483, MAX487, MAX488, and MAX489

feature reduced slew-rate drivers that minimize EMI and

reduce reflections caused by improperly terminated cables,

thus allowing error-free data transmission up to 250kbps.

The driver slew rates of the MAX481, MAX485, MAX490,

MAX491, and MAX1487 are not limited, allowing them to

transmit up to 2.5Mbps.

These transceivers draw between 120µA and 500µA of

supply current when unloaded or fully loaded with disabled

drivers. Additionally, the MAX481, MAX483, and MAX487

have a low-current shutdown mode in which they consume

only 0.1µA. All parts operate from a single 5V supply.

Drivers are short-circuit current limited and are protected

against excessive power dissipation by thermal shutdown

circuitry that places the driver outputs into a high-imped-

ance state. The receiver input has a fail-safe feature that

guarantees a logic-high output if the input is open circuit.

The MAX487 and MAX1487 feature quarter-unit-load

receiver input impedance, allowing up to 128 MAX487/

MAX1487 transceivers on the bus. Full-duplex communi-

cations are obtained using the MAX488–MAX491, while

the MAX481, MAX483, MAX485, MAX487, and MAX1487

are designed for half-duplex applications.

__Next Generation Device Features

♦

For Fault-Tolerant Applications

MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4

Unit Load, +3.3V, RS-485 Transceiver

MAX3440E–MAX3444E: ±15kV ESD-Protected,

±60V Fault-Protected, 10Mbps, Fail-Safe,

RS-485/J1708 Transceivers

♦

For Space-Constrained Applications

MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,

Profibus RS-485/RS-422 Transceivers

MAX3362: +3.3V, High-Speed, RS-485/RS-422

Transceiver in a SOT23 Package

MAX3280E–MAX3284E: ±15kV ESD-Protected,

52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422,

True Fail-Safe Receivers

MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,

SOT23, RS-855/RS-422 Transmitters

♦

For Multiple Transceiver Applications

MAX3030E–MAX3033E: ±15kV ESD-Protected,

+3.3V, Quad RS-422 Transmitters

♦

For Fail-Safe Applications

MAX3080–MAX3089: Fail-Safe, High-Speed

(10Mbps), Slew-Rate-Limited RS-485/RS-422

Transceivers

♦

For Low-Voltage Applications

MAX3483E/MAX3485E/MAX3486E/MAX3488E/

MAX3490E/MAX3491E: +3.3V Powered, ±15kV

ESD-Protected, 12Mbps, Slew-Rate-Limited,

True RS-485/RS-422 Transceivers

Ordering Information appears at end of data sheet.

MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487

________________________Applications

Low-Power RS-485 Transceivers

Low-Power RS-422 Transceivers

Level Translators

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

______________________________________________________________Selection Table

PART

NUMBER

MAX481

MAX483

MAX485

MAX487

MAX488

MAX489

MAX490

MAX491

MAX1487

HALF/FULL

DUPLEX

Half

Full

Half

DATA RATE

(Mbps)

2.5

0.25

2.5

0.25

2.5

SLEW-RATE

LIMITED

Yes

LOW-POWER

SHUTDOWN

Yes

RECEIVER/

DRIVER

ENABLE

Yes

QUIESCENT

CURRENT

(µA)

300

120

300

120

300

230

NUMBER OF

TRANSMITTERS

ON BUS

128

COUNT

________________________________________________________________

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX491M Related Products

	MAX491M	MAX491C	MAX491C/D	MAX491CPD	MAX491CSD	MAX491EPD	MAX491ESD	MAX491MJD
Description	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDSO14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDSO14	LINE TRANSCEIVER, CDIP14
Number of functions	1	1	-	1	1	1	1	1
Number of terminals	14	14	-	14	14	14	14	14
Minimum operating temperature	0.0 Cel	0.0 Cel	-	-	-	-40 °C	-40 °C	-55 °C
Maximum operating temperature	70 Cel	70 Cel	-	70 °C	70 °C	85 °C	85 °C	125 °C
Differential output	YES	YES	-	YES	YES	YES	YES	YES
Input properties	DIFFERENTIAL SCHMITT TRIGGER	DIFFERENTIAL SCHMITT TRIGGER	-	DIFFERENTIAL SCHMITT TRIGGER	DIFFERENTIAL SCHMITT TRIGGER	DIFFERENTIAL SCHMITT TRIGGER	DIFFERENTIAL SCHMITT TRIGGER	DIFFERENTIAL SCHMITT TRIGGER
Interface standards	EIA-422; EIA-485	EIA-422; EIA-485	-	EIA-422; EIA-485	EIA-422; EIA-485	EIA-422; EIA-485	EIA-422; EIA-485	EIA-422; EIA-485
Output characteristics	3-STATE	3-STATE	-	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE
Output polarity	COMPLEMENTARY	COMPLEMENTARY	-	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY
Number of receiver bits	1	1	-	1	1	1	1	1
Maximum supply voltage	5.25 V	5.25 V	-	5.25 V	5.25 V	5.25 V	5.25 V	5.25 V
Minimum supply voltage	4.75 V	4.75 V	-	4.75 V	4.75 V	4.75 V	4.75 V	4.75 V
surface mount	NO	NO	-	NO	YES	NO	YES	NO
Temperature level	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	MILITARY
Terminal form	THROUGH-HOLE	THROUGH-HOLE	-	THROUGH-HOLE	GULL WING	THROUGH-HOLE	GULL WING	THROUGH-HOLE
Terminal location	DUAL	DUAL	-	DUAL	DUAL	DUAL	DUAL	DUAL
length	19.05 mm	19.05 mm	-	19.05 mm	8.65 mm	19.05 mm	8.65 mm	-
width	7.62 mm	7.62 mm	-	7.62 mm	3.9 mm	7.62 mm	3.9 mm	7.62 mm
Is it lead-free?	-	-	Contains lead	Contains lead	Contains lead	Contains lead	Contains lead	Contains lead
Is it Rohs certified?	-	-	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible
Maker	-	-	Maxim	Maxim	-	Maxim	Maxim	Maxim
Parts packaging code	-	-	DIE	DIP	SOIC	DIP	SOIC	DIP
package instruction	-	-	DIE-10	DIP, DIP14,.3	SOP, SOP14,.25	DIP, DIP14,.3	SOP, SOP14,.25	DIP, DIP14,.3
Contacts	-	-	10	14	14	14	14	14
Reach Compliance Code	-	-	not_compliant	_compli	_compli	_compli	_compli	_compli
ECCN code	-	-	5A991.B.4	5A991.B.4	5A991.B.4	5A991.B.4	5A991.B.4	5A991.B.4
Other features	-	-	-	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER	1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER
Number of drives	-	-	-	1	1	1	1	1
High level input current maximum value	-	-	-	0.000002 A	0.000002 A	0.000002 A	0.000002 A	0.000002 A
Interface integrated circuit type	-	-	-	LINE TRANSCEIVER	LINE TRANSCEIVER	LINE TRANSCEIVER	LINE TRANSCEIVER	LINE TRANSCEIVER
JESD-30 code	-	-	-	R-PDIP-T14	R-PDSO-G14	R-PDIP-T14	R-PDSO-G14	R-CDIP-T14
JESD-609 code	-	-	-	e0	e0	e0	e0	e0
Humidity sensitivity level	-	-	-	1	1	1	1	1
Minimum output swing	-	-	-	1.5 V	1.5 V	1.5 V	1.5 V	1.5 V
Maximum output low current	-	-	-	0.004 A	0.004 A	0.004 A	0.004 A	0.004 A
Package body material	-	-	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	CERAMIC, METAL-SEALED COFIRED
encapsulated code	-	-	-	DIP	SOP	DIP	SOP	DIP
Encapsulate equivalent code	-	-	-	DIP14,.3	SOP14,.25	DIP14,.3	SOP14,.25	DIP14,.3
Package shape	-	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	-	-	IN-LINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	IN-LINE
Peak Reflow Temperature (Celsius)	-	-	-	245	245	245	245	245
power supply	-	-	-	5 V	5 V	5 V	5 V	5 V
Certification status	-	-	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum receive delay	-	-	-	150 ns	150 ns	150 ns	150 ns	200 ns
Maximum seat height	-	-	-	4.572 mm	1.75 mm	4.572 mm	1.75 mm	5.08 mm
Maximum slew rate	-	-	-	0.5 mA	0.5 mA	0.5 mA	0.5 mA	0.5 mA
Nominal supply voltage	-	-	-	5 V	5 V	5 V	5 V	5 V
technology	-	-	-	CMOS	CMOS	CMOS	CMOS	CMOS
Terminal surface	-	-	-	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)
Terminal pitch	-	-	-	2.54 mm	1.27 mm	2.54 mm	1.27 mm	2.54 mm
Maximum time at peak reflow temperature	-	-	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
maximum transmission delay	-	-	-	60 ns	60 ns	60 ns	60 ns	60 ns

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