MAX253CSA+T datasheet, PDF - EEWORLD Datasheet

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MAX253CSA+T: Descriptiongate drivers Transformer driver for iso RS-485 int; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size720KB，18 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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MAX253CSA+T Overview

gate drivers Transformer driver for iso RS-485 int

MAX253CSA+T Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Reach Compliance Code	compli
ECCN code	EAR99
Factory Lead Time	6 weeks
Interface integrated circuit type	INTERFACE CIRCUIT
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
power supply	5 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3.9 mm
Base Number Matches	1

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AVAILAB

MAX253

Transformer Driver for

Isolated RS-485 Interface

_______________General Description

The MAX253 monolithic oscillator/power-driver is

specifically designed to provide isolated power for an

isolated RS-485 or RS-232 data interface. The device

drives a center-tapped transformer primary from a 5V

or 3.3V DC power supply. The secondary can be

wound to provide any isolated voltage needed at power

levels up to 1W.

The MAX253 consists of a CMOS oscillator driving a

pair of N-channel power switches. The oscillator runs

at double the output frequency, driving a toggle flip-flop

to ensure 50% duty cycle to each of the switches.

Internal delays are arranged to ensure break-before-

make action between the two switches.

The SD pin puts the entire device into a low-power

shutdown state, disabling both the power switches and

oscillator.

____________________________Features

♦

Power-Supply Transformer Driver for Isolated

RS-485/RS-232 Data-Interface Applications

♦

Single 5V or 3.3V Supply

♦

Low-Current Shutdown Mode: 0.4µA

♦

Pin-Selectable Frequency: 350kHz or 200kHz

♦

8-Pin DIP, SO, and

µMAX

Packages

MAX253

______________Ordering Information

PART

MAX253CPA

MAX253CSA

MAX253CUA

MAX253C/D

MAX253EPA

MAX253ESA

MAX253ESA/V

MAX253MJA

TEMP RANGE

0°C to +70°C

-40°C to +85°C

-55°C to +125°C

PIN-PACKAGE

8 Plastic DIP

8 SO

8 μMAX

Dice*

8 Plastic DIP

8 SO

8 CERDIP**

________________________Applications

Isolated RS-485/RS-232 Power-Supply

Transformer Driver

High Noise-Immunity Communications Interface

Isolated and/or High-Voltage Power Supplies

Bridge Ground Differentials

Medical Equipment

Process Control

*Contact

factory for dice specifications.

**Contact

factory for availability and processing to MIL-STD-883.

Devices are also available in a lead(Pb)-free/RoHS-compliant

package. Specify lead-free by adding a (+) to the part number

when ordering.

/V Denotes an automotive qualified part.

__________Typical Operating Circuit

Functional Diagrams

ON / OFF

OUTPUT

5V @ 200mA

MAX253

FREQUENCY

SWITCH

GND1

GND2

Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

µMAX is trademark of Maxim Integrated Products, Inc.

UCSP is aa registered trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct

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

19-0226; Rev 2; 4/10

MAX253CSA+T Related Products

	MAX253CSA+T	MAX253ESA+	MAX253CSA+	MAX253CUA+	MAX253EPA+	MAX253EUA+T
Description	gate drivers Transformer driver for iso RS-485 int	gate drivers Transformer driver for iso RS-485 int	gate drivers Transformer driver for iso RS-485 int	gate drivers Transformer driver for iso RS-485 int	gate drivers Transformer driver for iso RS-485 int	gate drivers Transformer driver for iso RS-485 int
Is it lead-free?	Lead free	Lead free	Lead free	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to
Parts packaging code	SOIC	SOIC	SOIC	SOIC	DIP	SOIC
package instruction	SOP, SOP8,.25	ROHS COMPLIANT, SOP-8	ROHS COMPLIANT, SOP-8	TSSOP, TSSOP8,.19	DIP, DIP8,.3	TSSOP,
Contacts	8	8	8	8	8	8
Reach Compliance Code	compli	compli	compli	compli	compli	compli
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Factory Lead Time	6 weeks	6 weeks	6 weeks	6 weeks	6 weeks	6 weeks
Interface integrated circuit type	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	S-PDSO-G8	R-PDIP-T8	S-PDSO-G8
JESD-609 code	e3	e3	e3	e3	e3	e3
length	4.9 mm	4.9 mm	4.9 mm	3 mm	9.375 mm	3 mm
Humidity sensitivity level	1	1	1	1	1	1
Number of functions	1	1	1	1	1	1
Number of terminals	8	8	8	8	8	8
Maximum operating temperature	70 °C	85 °C	70 °C	70 °C	85 °C	85 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	TSSOP	DIP	TSSOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	SQUARE	RECTANGULAR	SQUARE
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	IN-LINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	260	260	260	260	NOT SPECIFIED
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	1.1 mm	4.572 mm	1.1 mm
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Nominal supply voltage	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES	NO	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	THROUGH-HOLE	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	0.65 mm	2.54 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	30	30	30	30	NOT SPECIFIED
width	3.9 mm	3.9 mm	3.9 mm	3 mm	7.62 mm	3 mm
Encapsulate equivalent code	SOP8,.25	SOP8,.25	SOP8,.25	TSSOP8,.19	DIP8,.3	-
power supply	5 V	5 V	5 V	5 V	5 V	-
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-
Base Number Matches	1	1	1	1	-	-
Maker	-	Maxim	Maxim	-	Maxim	Maxim

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