2-12

TELCOM SEMICONDUCTOR, INC.

* Stresses above those listed under "Absolute Maximum Ratings" may

cause permanent damage to the device. These are stress ratings only and

functional operation of the device at these or any other conditions above

those indicated in the operation sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage .............................................................. 7V

Operating Temperature ......................... – 40

°C to +125°C

Maximum Chip Temperature ................................. +150

°C

Storage Temperature ............................ – 65

°C to +150°C

Lead Temperature (Soldering, 10 sec) ................. +300

°C

DETAILED DESCRIPTION

The TC07 programs with resistors connected from the

driven active when temperature exceeds the setting deter-

maintained (latched) in their active states until temperature

drops below the setting determined by the programming

Figure 1. TC07 Output Waveforms

TEMPERATURE

OUT

TEMPERATURE SET BY

HYSTERESIS SET BY

OUT

APPLICATIONS

Trip Point Programming

The resistor values required to achieve the desired

using the formula below:

Where:

= Programming resistor value in Ohms

T

= Desired trip point temperature in degrees

Kelvin.

For example, to program the TC07 outputs to go active

at 50

ming resistors are calculated as follows:

mated using Figure 2. Care must be taken to ensure the

programming resistor. The temperature programmed on

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply Voltage Range

2.7

—

5.5

V

Supply Current

—

130

300

µA

Output Voltage (High)

——

V

Output Voltage (Low)

—

—

V

H

Minimum Hysteresis

– 5

—

—

°C

Absolute Accuracy

T = Programmed Temperature

T – 3

T

± 1

T + 3

°C

Absolute Accuracy

T = Programmed Temperature

T – 5

T

± 1

T + 5

°C

TC07

3V LOGIC OUTPUT TEMPERATURE

SENSOR WITH PROGRAMMABLE

HYSTERESIS