AEIC-7273-S16 Quad D ierff ential Line Driver LC With Open-Collector Outputs And Enable Function Data Sheet Description Features These line drivers are similar in function to the AEIC- Supply (Bias) Voltage Range 3.5 V to 30 V 7272-S16, only in an open-collector format. The VCC Operation to 800KHz pin powers the internal logic only. Output voltage is CMOS and TTL Compatible Inputs dependent on the customer supplied voltage, up to a maximum of 30 V. There is essentially no diff erence in Support RS422A output swing or performance with VCC (LOGIC) values High Impedance Buff ered Inputs with hysteresis from 3.5-30 V. Internal clamp diodes allow trouble-free NPN Open-Collector outputs operation when driving cable lengths exceeding 100 meters. The outputs are protected by initiating shutdown 80 mA peak SINK/SOURCE current when junction temperatures exceed safe limits. This Outputs Protected by Thermal Shut-Down feature assures highly reliable operation in harsh envi- ronments. Heat sinking is aided by having pin 8 directly Pin Assignment connected to the ASIC substrate inside the package. This part is available in 16L SOIC Pb-free) package. A 1 16 NC IN Applications A+ 2 15 D IN Encoders A- 3 14 D+ Industrial controls V REG V 4 13 D- CC B- 5 12 EN- B+ 6 11 C- B 7 10 C+ IN GND 8 C 9 INTable 1. Absolute Maximum Ratings Parameters Symbol Min. Max. Units Notes Operating Temperature Range T -55 125 C A Supply (Driver) Voltage Range V 3.5 30 V CCD Table 2. Electrical Characteristics Unless otherwise specifi ed, T = 25 C and EN- < 0.8 V. A Parameters Symbol Min. Typ. Max. Units Test Conditions Overtemp Operate Point (junction) T 172 C Note 1 JOP Overtemp Release Point (junction) T 136 C Note 1 JRP Vcc Voltage Range V 3.5 5 30 V CC Supply Current V I 11.9 16.0 mA V = 5 V CC1 CC1 CC Supply Current V I 2.5 3.4 mA V = 5 V, EN- > 2 V CC2 CC2 CC Supply Current V I 12.1 18.5 mA V = 30 V CC3 CC3 CC Supply Current V I 2.6 3.5 mA V = 30 V, EN- > 2 V CC4 CC2 CC Enable Input Threshold V 0.8 1.5 2 V THE Enable Low Level Input Current I -10 0 10 A V = 0 V, V = 5 V ILE IN CC Enable High Level Input Current I 108 150 A V = 5 V, V = 5 V IHE IN CC High Impedance Output Leakage I -4.0 0.0 4.0 A V = 5 V, EN- > 2 V, OZ CC Output at 15 V Input Positive-Going Threshold V 1.05 1.25 1.45 V T+ Input Negative-Going Threshold V 0.75 0.95 1.15 V T- Input Hysteresis V 0.3 V H Low Level Input Current I -4.0 -0.1 A V = 0 V, V = 5 V IL IN CC High Level Input Current I 0 4.0 A V = 5 V, V = 5 V IH IN CC Low Level Output1 V 375 500 mV I = 20 mA, V = 5 V, OL1 OL CC V = 30 V OC Low Level Output2 V 370 500 mV I = 20 mA, V = 30 V, OL2 OL CC V = 30 V OC High Level Output Current1 I 0 10 A V = 5 V, V = 30 V OH1 CC OC High Level Output Current2 I 0 10 A V = 30 V, V = 30 V OH2 CC OC Notes : 1. This is not a test parameter, but for information only. 2. Unused inputs should be connected to ground. 3. Do not leave pin 12 open. In applications which do not use the enable function, this pin should be tied to ground. Table 3. AC Switching Characteristics Load is 470 ohms and 1000 pF, output to its compliment and 470 ohms each output to Voc. Parameters Symbol Min. Typ. Max. Units Test Conditions Propagation delay, rising input 50% point T 232 325 ns See above. PLH to zero crossing of diff erential outputs Propagation delay, falling input 50% point T 236 330 ns See above. PHL to zero crossing of diff erential outputs Output Rise Time T 516 722 ns See above. R Output Fall Time T 516 722 ns See above. F 2