Other Analog Circuits In Brief . . . Other analog circuits are provided for special applications with both bipolar and CMOS technologies. These circuits range from the industry standard analog timing circuits and multipliers to specialized CMOS smoke detectors. These products provide key functions in a wide range of applications, including data transmission, commercial smoke detectors, and various industrial controls. Motorola Master Selection Guide 4.10–1 Timing Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Singles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Duals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear Four-Quadrant Multipliers . . . . . . . . . . . . . . Smoke Detectors (CMOS) . . . . . . . . . . . . . . . . . . . . . . Package Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4.10–2 4.10–2 4.10–2 4.10–2 4.10–2 4.10–3 4.10–4 Analog and Interface Integrated Circuits Timing Circuits Multipliers These highly stable timers are capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free–running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The output structure can source or sink up to 200 mA or drive TTL circuits. Timing intervals from microseconds through hours can be obtained. Additional terminals are provided for triggering or resetting if desired. Linear Four–Quadrant Multipliers 10 V O , OUTPUT VOLTAGE (V) Singles Multipliers are designed for use where the output voltage is a linear product of two input voltages. Typical applications include: multiply, divide, square, root–mean–square, phase detector, frequency doubler, balanced modulator/demodulator, electronic gain control. Multiplier Transfer Characteristics MC1455P1, D TA = 0° to +70°C, Case 626, 751 MC1455BP1, D TA = – 40° to +85°C, Case 626, 751 VCC 8 8.0 X 6.0 Y 4.0 k= 1 10 0 –2.0 –4.0 –6.0 –8.0 6 5.0 k Threshold Comp A R 7 Discharge Flip Flop 5.0 k 2 KXY 2.0 –10 –10 Control 5 Voltage + Trigger Inhibit/ S Reset 5.0 k 1 Gnd 4 Reset 6.0 8.0 10 MC1494P Q Comp B –8.0 –6.0 –4.0 –2.0 0 2.0 4.0 VX, INPUT VOLTAGE (V) 3 Output TA = 0° to +70°C, Case 648 This device has all the necessary internal regulation and references. The single–ended output is referenced to ground. MC1495D, P Duals TA = 0° to +70°C, Case 751A, 646 MC3456P TA = 0° to +70°C, Case 646 Maximum versatility is assured by allowing the user to select the level shift method. NE556N, D TA = 0° to +70°C, Case 646, 751A MC1495BP TA = –40° to +125°C, Case 646 Linearity and offset are actually tested over temperature. This is an improved specification over previous versions. Analog and Interface Integrated Circuits 4.10–2 Motorola Master Selection Guide Smoke Detectors (CMOS) These smoke detector ICs require a minimum number of external components. When smoke is sensed, or a low battery voltage is detected, an alarm is sounded via an external piezoelectric transducer. All devices are designed to comply with UL specifications. Table 1. Smoke Detectors (CMOS) Low Battery Detector Recommended R d d Power Source U i Unique Feature Ionization–Type S k D Smoke Detector t t Battery High Input Impedance FET Comparator C t Ionization–Type Smoke Detector with Interconnect Battery Photoelectric–Type S k D Smoke Detector t t with Interconnect Battery F i Function Line – Ionization–Type Smoke Detector Battery Ionization–Type Smoke Detector with Interconnect Battery S ffi / Suffix/ Package MC14467–1 P1/646 MC14578 P/648 MC14470 MC145010 Photo Amplifier Line Line – D i Device Number MC14468 Line Battery – Piezoelectric Pi l i Horn Driver Complies with UL217 and UL268 (1) MC145011 MC145012 Photo Amplifier, T l Pattern P tt Temporal (1) High Input Impedance FET Comparator, Temporal Pattern MC145013 MC145017 P/648, DW/751G P/646, DW/751G P/648 MC145018 (1) Low–supply detector. Motorola Master Selection Guide 4.10–3 Analog and Interface Integrated Circuits Other Analog Circuits Package Overview CASE 626 P1 SUFFIX CASE 646 N, P, P1 SUFFIX CASE 648 P SUFFIX CASE 751 D SUFFIX CASE 751A D SUFFIX CASE 751G DW SUFFIX Analog and Interface Integrated Circuits 4.10–4 Motorola Master Selection Guide