Am26LS31 Quad High Speed Differential Line Driver DISTINCTIVE CHARACTERISTICS FUNCTIONAL DESCRIPTION @ Qutput skew 2.0ns typical The Am26L$31 is a quad differential line driver, designed for @ [nput to output delay 12ns digital data transmission over balanced lines. The Am26LS31 @ Operation from single +5V supply meets all the requirements of EIA standard RS-422 and federal @ 16-pin hermetic and molded DIP package standard 1020. Is is designed to provide unipolar differential Outputs won't load line when Vcc = 0 drive to twisted-pair or parallel-wire transmission lines. @ Four line drivers in one package for maximum package The circuit provides an enable and disable function common density to all four drivers. The Am26LS31 features 3-state outputs Output short-circuit protection and logical OR-ed complementary enable inputs. The inputs Complementary outputs are all LS compatible and are all one unit load. @ Meets the requirements of EIA standard RS-422 The Am26LS31 is constructed using advanced low-power @ High output drive capability for 10092 terminated trans- Schottky processing. mission fines @ Available in military and commercial temperature range @ Advanced low-power Schottky processing @ 100% reliability assurance screening to MIL-STD-883 requirements LOGIC DIAGRAM _ INPUT INPUT INPUT INPUT ENABLE ENABLE D Cc 8 A GND Yee OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT CUTPUT OUTPUT Or - C+ c- B+ B~ Ar AR LIC-352 ORDERING INFORMATION CONNECTION DIAGRAM (Top View) NY INPUT A [| i [| pov Package Temperature Order Fy input o Type Range Number ouTpuTs | . Hermetic DIP -55C to +125C AM26LS31DM Id | oureurs Flat Pak -55C to +125C AM26LS34FM enaale [1 | Dice -55C to +125C AM26LS31XM | Biggs Hermetic DIP 0C to +70C AM26LS31DC eourrurs | Molded DIP 0C to +70C AM26LS31PC HN | oureurs Dice 0C to +70C AM26LS31XC input [J | sno] Pineute Note: Pin 1 is marked for orientation. LIC-353 4-36 Am26LS31 ABSOLUTE MAXIMUM RATINGS (Above which the useful life may be impaired) Supply Voltage 7.0V Input Voltage 7.0V Output Voltage 5.5V Storage Temperature Range ELECTRICAL CHARACTERISTICS over the operating temperature range The following conditions apply unless otherwise specified: ~65C to +150C Am26LS31XM (MIL) Ta = 55C to +125C 1 Veco = 5V + 10% Am26LS31XC (COM'L} Ta= oc ta +70C Veco =5V 5% Typ. Parameters Description Test Conditions Min. (Note 1} Max. Units VOoH Output HIGH Voitage Vec = Min., loy = 20mMA 2.5 | 3.2 | Volts F VoL Output LOW Voltage Vcc = Min., Ig, = 20mA 0.32 0.5 Volts ViH Input HIGH Voitage Vec = Min. 2.0 Volts VIL Input LOW Voltage Veco = Max, 0.8 Volts Poe input LOW Current Veo = Max., Viy =0.4V 0.20 | 036 mA i Ts Input HIGH Current Vec = Max., Ving = 2.7V | 05 20 uA ly Input Reverse Current Vec = Max., Vin = 7.0V 0.001 0.1 mA | lo Off-State {High Impedance} Vcc = Max. Vo = 5.5V 0.5 20 uA Output Current Vg =0.5V 05 ~20 vi Input Clamp Voltage Vec = Min., liye = 18mA 0.8 -~15 Volts Isc Output Short Circuit Current Vec = Max. -30 60 150 mA icc Power Supply Current Vec = Max., all outputs disabled 60 80 mA tPLH Input to Output Voc = 5.0V, Ta = 25C, Load = Note 2 12 20 ns | foe . t Input to Output Vi = 5.0V, Ta = 25C, Load = Note 2 12 20 ns PHL p cc = 30M TA : = a | SKEW Output to Output Vec = 5.0V, Ta = 25C, Load = Note 2 2.0 6.0 ns tLz Enable to Output Voc = 8.0V,Ta~ = 28C, CL = 10pF To 23 35 ns tHz Enable to Output Vee = 5.0V, Ta = 28C, Cy = 10pF 7 30 ns | tz, Enable to Output Vec = 5.0V, Ta = 25C, Load = Note 2 35 45 ns t2H | Enable to Output Vec = 5.0V, Ta = 25C, Load = Note 2 30 | 40. | ns Notes 1. All typical values are Veg = 5.0V. Ta = 25 C. 2. C, = 30PF, Vin = 1.3V to Vout = 1.3V, VpULSE = OV to +3.0V, See Below. AC LOAD TEST CIRCUIT PROPAGATION DELAY FOR THREE-STATE OUTPUTS (Notes 1 and 3} TEST POINT Yee INPUT _. $4 TRANSITION FROM OUTPUT 0 e UNDER TEST C_ INCLUDES R GuTPUT ie PROBE AND JIG 1 YOu CAPACITANCE Wot You suTrect 15v 82 a Lic-354 = = Gar to Lae a LIC-355 ENABLE AND DISABLE TIMES (Notes 2 and 3) Enable Disabte -- - 3 0v ENABLE a INPUT ~ a tay j++ tau tLz OUTPUT EY [ds O5v NORMALLY 1B ~1Se LOW 53 OPEN [- eH Hz oe GUTPUT mye a : NOR Tdv ~15V M1 S41 OPEN osy Lic-386 Notes: 1. Diagram snown for Enable LOW. 2. $4 and So of Load Circuit are closed except where shown, 3. Pulse Generator for All Pulses: Rate < 1.0MHz; Z, = 500; 1, < 15ns; 1 < 6.0ns, 4-37 Am26LS31 EQUIVALENT CIRCUIT (1/4 Am26LS31} O Vcc 16 Rg 502 Og Dt our ft }0 OUT 2.6 10.14 ad 26.17.13 ay 3 R20 > Q3 ay Os Qe 4 GND 8 36 Raz AW R38 TO OTHER ef THREE DRIVERS R39 WAY WA Rao (FEED THAL: BLI-023 TYPICAL APPLICATION oO _ 4 Va DATA Gara Amdee31 Rr Am26LS32 OUT 4} o. DATA DATA sur out 7 SHIELD OR COMMON GROUND RETURN LIG-357 4-38 Am26LS31 Guaranteed Voy and Vo; (Ta = -55C to +125C) VourT Versus Vcc GND DIE SIZE 0.067 X 0.084 5.0 i Vou @ Ver = 5.5 40 | w Von @ Ver = 5.0V a = 55C a : 8 5 30 PS 2sc > g ba 125C - Vou Vcc = 4.5V = 4 Jie | 5 8 20 ; 5 > PIN 4 < 0.8V, PIN 12 2 2.0V MFT RL = 10k2 TO GROUND 10 (0 _[_AREA INSIDE ENVELOPE VoL @4.5V = Voc <5.5V , IS LOW IMPEDANCE. (~509) |__| AREA OUTSIDE ENVELOPE IS HIGH IMPEDANCE (>1/4M9) a 40 80 12 16 20 0 1.0 2.0 3.0 4.0 Lic-358 Jot OR -ton (ma) Vout (VOLTS! LIC-359 Metallization and Pad Layout bav INPUT & ! INPUT DB 2 CHANNEL A CHANNEL D OUTPUTS OUTPUTS 3 ENABLE 4 ENABLE 5 CHANNEL B CHANNEL C OUTPUTS OUTPUTS 6 INPLIT B ? INPUT C 4-39