AEIC-7272-S16 Quad D ierff ential Line Driver Separate Logic Bias and Driver Bias With Tri-State Outputs Data Sheet Description Features These line drivers are pin compatible with 26LS31 in ap- Supply (Bias) Voltage Range 3.5 V to 30 V plications where pin 4 = 5V and pin 12 = GND. Internal Operation to 800 KHz clamp diodes allow trouble-free operation when driving CMOS and TTL Compatible Inputs cable lengths exceeding 100m. Split supplies are provided to minimize standby power dissipation in high voltage ap- Separate logic bias and driver supply pins plications. The logic should be powered from a regulated Optional single supply operation for moderate power 5V supply at the VccBias pin. The output stages may then applications be powered by a separate supply at VccDrivers, up to 30V. High Impedance Buff ered Inputs with hysteresis Output voltage swings of 0.3V to VCC-1.9V are typical. The outputs are protected against shorts to ground, shorts to Tri-State outputs Vcc and to other outputs, by a two-fold scheme of current 80 mA peak SINK/SOURCE current limiting and thermal shutdown. This assures highly reliable operation in harsh environments. Pin Assignment This part is available in 16L SOIC (Pb-free) package. A 1 16 Vcc Drivers IN Applications A+ 2 15 D Encoders IN Industrial controls A- 3 14 D+ V REG Vcc Bias 4 13 D- B- 5 12 EN- B+ 6 11 C- B 7 10 C+ IN GND 8 9 C INTable 1. Absolute Maximum Ratings Parameters Symbol Min. Max. Units Test Conditions Operating Temperature Range T -55 125 C A Supply (Driver) Voltage Range V 4.5 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 Bias Voltage Range V 3.5 5 30 V CCB Vcc Drivers Voltage Range V 4.5 5 30 V CCD Supply Current V (BIAS) I - 11.9 16.0 mA V and V = 5 V CCB1 CCB1 CCB CCD Supply Current V (DRIVERS) I - 2.4 3.3 mA V and V = 5 V CCD1 CCD1 CCB CCD Supply Current V I - 2.5 3.4 mA V and V = 5 V, EN- > 2 V CCB2 CCB2 CCB CCD Supply Current V I - 0.0 0.1 mA V and V = 5 V, EN- > 2 V CCD2 CCD2 CCB CCD Supply Current V I - 12.1 18.5 mA V and V = 30 V CCB3 CCB3 CCB CCD Supply Current V I - 2.4 3.3 mA V and V = 30 V CCD3 CCD3 CCB CCD Supply Current V I - 2.6 3.5 mA V and V = 30 V, EN- > 2 V CCB4 CCB4 CCB CCD Supply Current V I - 0.0 0.1 mA V and V = 30 V, EN- > 2 V CCD4 CCD4 CCB CCD 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 CCB Enable High Level Input Current I 108 150 A V = 5 V, V = 5 V IHE IN CCB High Impedance Output Leakage I -4.0 0.0 4.0 A V = 30 V, EN- > 2 V, OZ CCD Output at 15 V Input Positive-Going Threshold V 1.05 1.25 1.45 V V = 5 V T+ CCB Input Negative-Going Threshold V 0.75 0.95 1.15 V V = 5 V T- CCB Input Hysteresis V 0.3 V V = 5 V H CCB Low Level Input Current I -4.0 -0.1 - A V = 0 V, V = 5 V IL IN CCB High Level Input Current I - 0 4.0 A V = 5 V, V = 5 V IH IN CCB Low Level Output1 V - 375 500 mV I = 20 mA, V = 5 V OL1 OL CCD Low Level Output2 V - 370 500 mV I = 20 mA, V =30 V OL2 OL CCD High Level Output1 V 2.4 2.8 - V I = -20 mA, V = 5 V OH1 OH CCD High Level Output2 V 27.7 28.1 - V I = -20 mA, V =30 V OH2 OH CCD Note: 1. This is not a test parameter, but for information only. Table 3. AC Switching Characteristics Values given at V = 5 V, V = 24 V, T = 25 C, C = 1000 pF on all outputs, and EN- < 0.8 V. CCB CCD A L Parameters Symbol Min. Typ. Max. Units Test Conditions Propagation delay, rising input 50% point T - 450 630 ns See above. PLH to zero crossing of diff erential outputs Propagation delay, falling input 50% point T - 450 630 ns See above. PHL to zero crossing of diff erential outputs Output Rise Time T - 700 980 ns See above. R Output Fall Time T - 700 980 ns See above. F 2