SAA1029 UNIVERSAL INDUSTRIAL LOGIC AND INTERFACE CIRCUIT GENERAL DESCRIPTION The SAA1029 is a universal bipolar logic and interface IC with high noise immunity and operational stability for industrial control applications. The most fundamental industrial control functions can be accomplished with only one SAA1029IC. Figure 1 shows the logic configuration. The IC comprises, (1) Gate 1 : 4-input AND gate with 1 inverted input, (2) Gate 2 : 3-input AND gate with 1 inverted input and adjustable propagation delay, (3) Gate 3 : 2-input AND gate with 1 inverted input. The SAA1029 can be used as direct interface with LOCMOS (CMOS) Ics for realizing more complex functions. Therefore, the output signal can be limited to the voltage level of the common output claming pin Z. The propagation delay of NAND gate 2 is adjustable from microseconds by using an external capacitor at pin C. This makes it possible to adapt the control frequency limits to the system, so the optimum dynamic noise » immunity can be achieved. All the static and dynamic circuit values ( including the output voltage) are independent of the supply voltage over a wide operating range. This allows the use of a simple unstabilized power supply. The output is held to the LOW state automatically during swithching on the power supply, so a special reset pulse can be omitted. Features • Simple realization of the basic industrial control functions ( logic functions, timing functions, memory functions). • High dynamic and static noise immunity. • High operation stability. • Short-circut protection of inputs and outputs to both VEE and VCC. • Wide interruption results in a safe input LOW state. • LOCMOS (CMOS) compatible. SAA1029 QUICK REFERENCE DATA Supply voltage range VCC 14 to 31,2V Operating ambient temerature range Tamb -30 to +85°C Input voltage HIGH VIH 7,5 to 44V Output voltage HIGH (without clamping) VOH 13 to 30V Output voltage HIGH (without clamping at pin Z) VOH 2,0 to (VCC –0,7)V Input current II max. 10mA Quiescent supply current ICC typ. 7,8mA PACKAGE OUTLINE 16-lead DIL ; plastic (SOT38). SAA1029 CHARACTERISTICS : At Tamb : -10 to +85°C/ Vcc 14V to 32V SYMB PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE VCC 14 32 V OUTPUT CLAMPING VZ=VCC-1 VZ 0 30 V VOLTAGE INPUT VOLTAGE LOW VIL -0,15 +5 V INPUT VOLTAGE HIGH VIH +7,5 +44 V CURRENT VCC :30V ICC 6,5 12 mA CONSOMATION INPUT CURRENT VCC :24V IIL :IIH 0,1 0,15 0,3 mA VCC :14V OUTPUT VOLTAGE VoH 12 12,8 V HIGH -IoH :3 mA OUTPUT VOLTAGE VCC :30V VoL 0,9 1,4 V LOW -IoL :1,6 mA OUTPUT SHORT- CIRCULT CURRENT LOW SIGNAL 10SL 6 mA HIGH SIGNAL 10SH 10 18 mA PROPAGATION Tamb :25°C DELAYS VCC24V GATE 2 HIGH TO LOW C :33nF tpHL 1,5 2,6 4 mD LOW TO HIGH C :33nF tpLH 5,5 8,5 12 mS GATE 1,2,3 HIGH TO LOW C :0nF tPHL 1 2,1 9 MD LOW TO HIGH C :0nF tPLH 1 4,4 9 MD