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Specifications
Temperature Range:
-40℃~+125℃
Interface:
I2C;SMBus
Voltage - Supply:
2.7V~5.5V
Mfr. Part #:
TC74A1-3.3VAT
Package:
TO-220-5
Key Attributes
Model Number:
TC74A1-3.3VAT
Product Description
Product Overview
The TC74 is a serially accessible, digital temperature sensor designed for low-cost, small-form-factor applications. It provides temperature data as an 8-bit digital word via a 2-wire SMBus/I2C compatible serial port. Key features include solid-state sensing with high accuracy, a wide supply voltage range, and low power consumption in both operating and standby modes. Its ease of use and small size make it ideal for thermal management in various systems.
Product Attributes
- Brand: Microchip Technology Inc.
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Units | Conditions |
|---|---|---|---|---|---|---|
| Power-on Reset Threshold | VPOR | 1.2 | 2.2 | V | VDD Falling Edge or Rising Edge | |
| Supply Voltage | VDD | 2.7 | 5.5 | V | Note 5 | |
| Operating Current | IDD | 200 | 350 | A | VDD = 5.5V, Note 1 | |
| Standby Supply Current | IDD-STANDBY | 5.0 | 10 | A | VDD = 3.3V, Serial Port Inactive, Note 4 | |
| Temperature Accuracy | TERR | 2.0 | C | +25C < TA < +85C | ||
| Temperature Accuracy | TERR | 3.0 | C | 0C < TA < +125C | ||
| Conversion Rate | CR | 4 | 8 | SPS | Note 2 | |
| Logic Input High | VIH | 0.8 x VDD | V | |||
| Logic Input Low | VIL | 0.2 x VDD | V | |||
| SDA Output Low | VOL | 0.4 | V | IOL = 3 mA | ||
| SDA Output Low | VOL | 0.6 | V | IOL = 6 mA, Note 3 | ||
| Input Capacitance | CIN | 5.0 | pF | SDA, SCLK | ||
| I/O Leakage | ILEAK | -1.0 | 0.1 | 1.0 | A | |
| SMBus/I2C Clock Frequency | fSMB | 10 | 100 | kHz | Serial Port AC Timing (CLOAD = 80 pF) | |
| Low Clock Period | tLOW | 4.7 | sec | 10% to 10% | ||
| High Clock Period | tHIGH | 4.0 | sec | 90% to 90% | ||
| SMBus/I2C Rise Time | tR | 1000 | nsec | 10% to 90% | ||
| SMBus/I2C Fall Time | tF | 300 | nsec | 90% to 10% | ||
| START Condition Setup Time | tSU(START) | 4.0 | sec | 90% SCLK to 10% SDA | ||
| START Condition Hold Time | tH(START) | 4.0 | sec | |||
| Data In Setup Time | tSU-DATA | 1000 | nsec | |||
| Data In Hold Time | tH-DAT | 1250 | nsec | |||
| STOP Condition Setup Time | tSU(STOP) | 4.0 | sec | |||
| Bus Free Time Prior to New Transition | tIDLE | 4.7 | sec | |||
| Power-on Reset Delay | tPOR | 500 | sec | VDD VPOR (Rising Edge) |
2410121852_MICROCHIP-TC74A1-3-3VAT_C641444.pdf
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