Order this document by MC1489/D The MC1489 monolithic quad line receivers are designed to interface data terminal equipment with data communications equipment in conformance with the specifications of EIA Standard No. EIA–232D. • Input Resistance – 3.0 k to 7.0 kΩ • • • QUAD MDTL LINE RECEIVERS EIA–232D Input Signal Range – ± 30 V Input Threshold Hysteresis Built In Response Control a) Logic Threshold Shifting b) Input Noise Filtering SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE CASE 646 ORDERING INFORMATION Operating Temperature Range Device D SUFFIX PLASTIC PACKAGE CASE 751A (SO–14) Package MC1489P, AP Plastic TA = 0 to + 75°C MC1489D, AD SO–14 PIN CONNECTIONS Simplified Application Line Driver MC1488 Interconnecting Cable Interconnecting Cable MDTL Logic Input Line Receiver MC1489 MDTL Logic Output Input A 1 14 VCC Response Control A 2 13 Input D Output A 3 12 Response Control D Input B 4 11 Output D Response Control B 5 10 Input C Output B 6 9 Response Control C Ground 7 8 Output C Representative Schematic Diagram (1/4 of Circuit Shown) 14 VCC 9.0 k 5.0 k 1.7 k RF Response Control 2 3 Output 3.8 k Input 1 RF MC1489 MC1489A 6.7 kΩ 1.6 kΩ 10 k 7 GND Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Rev 5 1 MC1489, A MAXIMUM RATINGS (TA = + 25°C, unless otherwise noted) Rating Symbol Value Unit Power Supply Voltage VCC 10 Vdc Input Voltage Range VIR ± 30 Vdc Output Load Current IL 20 mA PD 1/θJA 1000 6.7 mW mW/°C TA 0 to + 75 °C Tstg – 65 to + 175 °C Power Dissipation (Package Limitation, SO–14 and Plastic Dual In–Line Package) Derate above TA = + 25°C Operating Ambient Temperature Range Storage Temperature Range ELECTRICAL CHARACTERISTICS (Response control pin is open.) (VCC = + 5.0 Vdc ± 10%, TA = 0 to + 75°C, unless otherwise noted) Characteristics Symbol Min Typ Max Unit Positive Input Current (VIH = + 25 Vdc) (VIH = + 3.0 Vdc) IIH 3.6 0.43 – – 8.3 – mA Negative Input Current (VIH = – 25 Vdc) (VIH = – 3.0 Vdc) IIL – 3.6 – 0.43 – – – 8.3 – mA 1.0 1.75 – 1.95 1.5 2.25 0.75 0.75 – 0.8 1.25 1.25 4.0 4.0 5.0 5.0 Vdc Input Turn–On Threshold Voltage (TA = + 25°C, VOL 0.45 V) VIH p Vdc MC1489 MC1489A Input Turn–Off Threshold Voltage (TA = + 25°C, VOH 2.5 V, IL = – 0.5 mA) VIL q Vdc MC1489 MC1489A Output Voltage High (VIH = 0.75 V, IL = – 0.5 mA) (Input Open Circuit, IL = – 0.5 mA) VOH 2.5 2.5 Output Voltage Low (VIL = 3.0 V, IL = 10 mA) VOL – 0.2 0.45 Vdc IOS – – 3.0 – 4.0 mA Power Supply Current (All Gates “on,” Iout = 0 mA, VIH = + 5.0 Vdc) ICC – 16 26 mA Power Consumption PC – 80 130 mW Output Short–Circuit Current (VIH = + 5.0 Vdc) SWITCHING CHARACTERISTICS (VCC = 5.0 Vdc ± 1%, TA = + 25°C, See Figure 1.) Propagation Delay Time (RL = 3.9 kΩ) tPLH – 25 85 ns Rise Time (RL = 3.9 kΩ) tTLH – 120 175 ns Propagation Delay Time (RL = 390 kΩ) tPHL – 25 50 ns Fall Time (RL = 390 kΩ) tTHL – 10 20 ns TEST CIRCUITS Figure 1. Switching Response Figure 2. Response Control Node 5.0 Vdc VR RL All diodes 1N3064 or equivalent Ein R Eo CL 3.0 V 50% 50% Ein tPLH EO tTHL C tTLH and tTHL measured 10% – 90% tTLH 1.5 V 1.5 V Vin 1/4 MC1489A Response Node VO C, capacitor is for noise filtering. R, resistor is for threshold shifting. CL = 15 pF = total parasitic capacitance which includes probe and wiring capacitances 2 MOTOROLA ANALOG IC DEVICE DATA MC1489, A TYPICAL CHARACTERISTICS (VCC = 5.0 Vdc, TA = +25°C, unless otherwise noted) Figure 3. Input Current Figure 4. MC1489 Input Threshold Voltage Adjustment 10 6.0 5.0 VO , OUTPUT VOLTAGE (Vdc) 6.0 4.0 2.0 0 – 2.0 II – 4.0 VI – 6.0 – 8.0 – 10 – 25 – 20 – 15 – 10 – 5.0 5.0 0 10 15 20 25 VO , OUTPUT VOLTAGE (Vdc) 1 RT 11 k Vth – 5.0 V Vth 1.0 0 VILH VIHL 0 1.0 2.0 3.0 Figure 6. Input Threshold Voltage versus Temperature 4.0 RT 11 k Vth – 5.0 V RT RT 5.0 k Vth 5.0 V 1 EO RT Vth 1.0 0 – 1.0 0 VILH VIHL 1.0 2.0 3.0 4.0 EO RT Figure 5. MC1489A Input Threshold Voltage Adjustment Vin – 3.0 – 2.0 RT VI, INPUT VOLTAGE (V) 5.0 2.0 RT 13 k Vth 5.0 V Vin, INPUT VOLTAGE (V) 6.0 3.0 VI 4.0 RT 5.0 k 3.0 Vth 5.0 V 2.0 – 3.0 – 2.0 – 1.0 VIH , INPUT THRESHOLD VOLTAGE (Vdc) IL, INPUT CURRENT (mA) 8.0 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 – 60 VI, INPUT VOLTAGE (V) MC1489A VIH MC1489 VIH MC1489 VIL MC1489A VIL 0 + 60 + 120 T, TEMPERATURE (°C) Figure 7. Input Threshold versus Power Supply Voltage INPUT THRESHOLD VOLTAGE (Vdc) 2.0 1.0 VIH MC1489A VIH MC1489 VIL MC1489 VIL MC1489A 0 3.0 4.0 5.0 6.0 VCC, POWER SUPPLY VOLTAGE (V) MOTOROLA ANALOG IC DEVICE DATA 3 MC1489, A APPLICATIONS INFORMATION General Information The Electronic Industries Association (EIA) has released the EIA–232D specification detailing the requirements for the interface between data processing equipment and data communications equipment. This standard specifies not only the number and type of interface leads, but also the voltage levels to be used. The MC1488 quad driver and its companion circuit, the MC1489 quad receiver, provide a complete interface system between DTL or TTL logic levels and the EIA–232D defined levels. The EIA–232D requirements as applied to receivers are discussed herein. The required input impedance is defined as between 3000 Ω and 7000 Ω for input voltages between 3.0 and 25 V in magnitude; and any voltage on the receiver input in an open circuit condition must be less than 2.0 V in magnitude. The MC1489 circuits meet these requirements with a maximum open circuit voltage of one VBE. The receiver shall detect a voltage between – 3.0 and – 25 V as a Logic “1” and inputs between 3.0 and 25 V as a Logic “0.” On some interchange leads, an open circuit of power “OFF” condition (300 Ω or more to ground) shall be decoded as an “OFF” condition or Logic “1.” For this reason, the input hysteresis thresholds of the MC1489 circuits are all above ground. Thus an open or grounded input will cause the same output as a negative or Logic “1” input. Device Characteristics The MC1489 interface receivers have internal feedback from the second stage to the input stage providing input hysteresis for noise rejection. The MC1489 input has typical turn–on voltage of 1.25 V and turn–off of 1.0 V for a typical hysteresis of 250 mV. The MC1489A has typical turn–on of 1.95 V and turn–off of 0.8 V for typically 1.15 V of hysteresis. Each receiver section has an external response control node in addition to the input and output pins, thereby allowing the designer to vary the input threshold voltage levels. A resistor can be connected between this node and an external power supply. Figures 2, 4 and 5 illustrate the input threshold voltage shift possible through this technique. This response node can also be used for the filtering of high frequency, high energy noise pulses. Figures 8 and 9 show typical noise pulse rejection for external capacitors of various sizes. These two operations on the response node can be combined or used individually for many combinations of interfacing applications. The MC1489 circuits are particularly useful for interfacing between MOS circuits and MDTL/MTTL logic systems. In this application, the input threshold voltages are adjusted (with the appropriate supply and resistor values) to fall in the center of the MOS voltage logic levels (see Figure 10). The response node may also be used as the receiver input as long as the designer realizes that he may not drive this node with a low impedance source to a voltage greater than one diode above ground or less than one diode below ground. This feature is demonstrated in Figure 11 where two receivers are slaved to the same line that must still meet the EIA–232D impedance requirement. Figure 8. Typical Turn On Threshold versus Capacitance from Response Control Pin to GND Figure 9. Typical Turn On Threshold versus Capacitance from Response Control Pin to GND 6 6 MC1489A MC1489 5 10 pF 100 pF 300 pF 500 pF E in , AMPLITUDE (V) E in , AMPLITUDE (V) 5 4 3 2 100 pF 300 pF 500 pF 3 2 1 1 10 100 1000 PW, INPUT PULSE WIDTH (ns) 4 12 pF 4 10,000 10 100 1000 10,000 PW, INPUT PULSE WIDTH (ns) MOTOROLA ANALOG IC DEVICE DATA MC1489, A Figure 10. Typical Translator Application – MOS to DTL or TTL + 5.0 Vdc R MC1489 MOS Logic –VGG DTL or TTL –VDD + 5.0 Vdc + 5.0 Vdc Figure 11. Typical Paralleling of Two MC1489, A Receivers to Meet EIA–232D VCC Response–Control Pin Input 8.0 k 1/2 MC1489 Output VCC Output Input 8.0 k Response–Control Pin MOTOROLA ANALOG IC DEVICE DATA 5 MC1489, A OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 646–06 ISSUE L 14 NOTES: 1. LEADS WITHIN 0.13 (0.005) RADIUS OF TRUE POSITION AT SEATING PLANE AT MAXIMUM MATERIAL CONDITION. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 4. ROUNDED CORNERS OPTIONAL. 8 B 1 7 A F DIM A B C D F G H J K L M N L C J N H G D SEATING PLANE K M D SUFFIX PLASTIC PACKAGE CASE 751A–03 (SO–14) ISSUE F –A– 14 1 P 7 PL 0.25 (0.010) 7 G M F –T– M K D 14 PL 0.25 (0.010) M T B S M R X 45 _ C SEATING PLANE B A S MILLIMETERS MIN MAX 18.16 19.56 6.10 6.60 3.69 4.69 0.38 0.53 1.02 1.78 2.54 BSC 1.32 2.41 0.20 0.38 2.92 3.43 7.62 BSC 0_ 10_ 0.39 1.01 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 8 –B– INCHES MIN MAX 0.715 0.770 0.240 0.260 0.145 0.185 0.015 0.021 0.040 0.070 0.100 BSC 0.052 0.095 0.008 0.015 0.115 0.135 0.300 BSC 0_ 10_ 0.015 0.039 J DIM A B C D F G J K M P R MILLIMETERS MIN MAX 8.55 8.75 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.337 0.344 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.228 0.244 0.010 0.019 Motorola reserves the right to make changes without further notice to any products herein. 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