TCA105

The TCA105 is a kind of bipolar IC. It contains an oscillator stage, a threshold switch, and two anti-valent output stages. The TCA105 IC is especially suitable for proximity switches, light reflection switches, and other contactless switching applications. There are some features as follows: (1)wide range of supply voltage: 4.5 to 30 V; (2)high output current: 50 mA; (3)TTL compatible; (4)triggerable with DC signal.

What comes next is about the absolute maximum ratings of TCA105: (1)supply voltage, VS: 30 V; (2)supply voltage (pin 4, pin 5), VQ: 30 V; (3)output current, IQ: 50 mA; (4)switching frequency, fs: 40 kHz; (5)input voltage, VI: 0 V; (6)junction temperature, Tj: 150; (7)storage temperature range, Tstg: -55 to 125; (8)thermal resistance (system-air), Rth SA: 115 K/W. Then is about the operating range: (1)supply voltage, VS: 4.75 to 30 V; (2)ambient temperature, TA: -25 to 85; (3)oscillating frequency, fOSC: 1 to 4.5 MHz.

The last one is about the characteristics of TCA105(static measurement, pins 3 and 1 interconnected, VS=12 V, TA=25, RC=5.6 k): (1)supply current, IS: 3.4 mA typ and 5 mA max; (2)input threshold voltage with compensation resistor RC, VI: 300 V min, 400 V typ and 480 V max; (3)input threshold current, II: -60A typ; (4)hysteresis voltage, Vhy: 20 mV min, 35 mV typ and 50 mV max; (5)L-output voltage, VQL: 0.25 V typ and 0.35 V max at IQ=16 mA; (6)H-output voltage, VOH: correspond to VS ; (7)reverse current, VS=30 V and/or 20 V, IQH: 60A max; (8)L-output voltage at IQ=50 mA, VQL: 0.7 V typ and 1.15 V max; (9)switching time in TTL operation at IQ=16 mA, t: 3S typ.