MAX491C/D datasheet, PDF - EEWORLD Datasheet

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MAX491C/D: DescriptionLINE TRANSCEIVER, PDIP14; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size439KB，19 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX491C/D Overview

LINE TRANSCEIVER, PDIP14

MAX491C/D Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Maxim
Parts packaging code	DIE
package instruction	DIE-10
Contacts	10
Reach Compliance Code	not_compliant
ECCN code	5A991.B.4

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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.

MAX491C/D Related Products

	MAX491C/D	MAX491C	MAX491CPD	MAX491CSD	MAX491EPD	MAX491ESD	MAX491M	MAX491MJD
Description	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDSO14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, PDSO14	LINE TRANSCEIVER, PDIP14	LINE TRANSCEIVER, CDIP14
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
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	-	-	-40 °C	-40 °C	0.0 Cel	-55 °C
Maximum operating temperature	-	70 Cel	70 °C	70 °C	85 °C	85 °C	70 Cel	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	YES	NO	YES	NO	NO
Temperature level	-	COMMERCIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	MILITARY
Terminal form	-	THROUGH-HOLE	THROUGH-HOLE	GULL WING	THROUGH-HOLE	GULL WING	THROUGH-HOLE	THROUGH-HOLE
Terminal location	-	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
length	-	19.05 mm	19.05 mm	8.65 mm	19.05 mm	8.65 mm	19.05 mm	-
width	-	7.62 mm	7.62 mm	3.9 mm	7.62 mm	3.9 mm	7.62 mm	7.62 mm
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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