MAX6666

V_CC.........................................................................-0.3V to +6.0V
D_OUTMAX6666...............................................-0.3V to (V_CC+ 0.3V)
MAX6667...............................................................-0.3V to + 6.0V
D_OUTCurrent.........................................................-1mA to +50mA
Continuous Current into Any Other Terminal.....................±20mA

Continuous Power Dissipation (T_A= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C).............695.7mW
8-Pin µMAX (derate 4.1mW/°C above +70°C)..................330mW
8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW
Operating Temperature Range..........................-40°C to +150°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering,10s)......................................+150°

The MAX6666/MAX6667 are high-accuracy, low-cost, low-power temperature sensors with a single-wire  output. The MAX6666/MAX6667 convert the ambient temperature into a ratiometric PWM output with temper- ature information contained in the duty cycle of the out-put square wave. The MAX6666 has a push-pull output and the MAX6667 has an open-drain output.The MAX6666/MAX6667 operate at supply voltages from +3V to +5.5V. The typical unloaded supply current at 5.0V is 200µA. Both devices feature a single-wire output that minimizes thenumber of pins necessary to interface with a microprocessor (µP). The output is asquare wave with a nominal frequency of 35Hz (±20%)at +25°C. The output format is decoded as follows: Temperature (°C) = 235 - (400 x t1) / t²Where t ¹is fixed with a typical value of 10ms and t²is modulated by the temperature (Figure 1). The MAX6666/MAX6667 operate from -40°C to +125°C and are available in space-saving SOT23 and µMAX packages.