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LM74 Product Folder

SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor

See Also:

LM70 - In LLP package.

Generic P/N 74

Parametric Table

Temperature Min (deg C)	-55
Temperature Max (deg C)	150
Accuracy (+/-) (deg C)	1.25
Supply Min (Volt)	3
Supply Max (Volt)	5.50
Quiescent Current (mA)	.52
RemoteDiode ThermalSensor ()	-
Interface Type	SPI/Microwire

Resolution (bit)	13
Resolution degCperLSB ()	.0625
Programmable Setpoints	No
Shutdown	Yes
Integrated FanControls ()	-
Interrupt Outputs ()	-
Fault Queue	No

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM74 SPI MICROWIRE 12-Bit Plus Sign Temperature Sensor	293 Kbytes	19-Nov-03	View Online	Download	Receive via Email
LM74 SPI MICROWIRE 12-Bit Plus Sign Temperature Sensor (JAPANESE)	152 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM74-3EVAL

evaluation board

Full production

N/A

$14.00

N/A

LM74CIBP-3

microSMD

Status

Full production

N/A

1K+

$0.85

reel
of
250

XV
I 8

11-12 weeks

20000

LM74CIBP-5

microSMD

Status

Full production

N/A

1K+

$0.85

reel
of
250

XV
I 9

11-12 weeks

20000

LM74CIM-3

SOIC NARROW

Status

Full production

N/A

1K+

$0.70

rail
of
95

NSXYTT
LM74
CIM3

11-12 weeks

5000

LM74CIM-5

SOIC NARROW

Status

Full production

N/A

1K+

$0.70

rail
of
95

NSXYTT
LM74
CIM5

11-12 weeks

5000

The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 µA. This mode is useful in systems where low average power consumption is critical.

The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of -55°C to +150°C.

The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SO-8 package as well as an 5-Bump micro SMD package.

Features

0.0625°C temperature resolution.
Shutdown mode conserves power between temperature reading
SPI and MICROWIRE Bus interface
5-Bump micro SMD package saves space

Key Specification

Supply Voltage		3.0V or 2.65V to 5.5V
Supply Current	operating	265µA (typ)
		520µA (max)
	shutdown	3µA (typ)
Temperature Accuracy	-10°C to 65°C	±1.25°C(max)
	-25°C to 110°C	±2.1°C(max)
	-55°C to 125°C	±3°C(max)

Applications

System Thermal Management
Personal Computers
Disk Drives
Office Electronics
Electronic Test Equipment

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM74CIBP-3	CS065	0	8800	0	600000	6	169643205
LM74CIBP-5	CS065	0	8800	0	600000	6	169643205
LM74CIM-3	CS065	0	8800	0	600000	6	169643205
LM74CIM-5	CS065	0	8800	0	600000	6	169643205
LM74-3EVAL	CS100	3	19400	155	900000	4	254464808

For more information on Reliablitity Metrics, please click here.

Application Notes

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
AN-1256: Application Note 1256 Tiny Temperature Sensors for Portable Systems	66 Kbytes	1-Oct-02	View Online	Download	Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

LM74 Product Folder