M74LS244P MITSUBISHI | Alldatasheet
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Technical content
OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUTS(NONINVERTED)
DESCRIPTION
PI INFIGURATION (TOP VIEW) The M74LS244P is a semiconductor integrated circuit N CONFIG ‘ containing 2 blocks of buffers with 3-state non-inverted CONTROL 150+ [7h [7] Yoo output and common output controlling input for all 4 Pur <a woo BU discrete circuits. near Var Ee (<e ee WweUT oureut 2¥4 + BI {i8] -* 1; OUTPUT FEATURES TNE on, nour © Low input load factor (pnp input) INPUT 12 Ee i] + 246 © Hysteresis provided (= 400mV typical) ourrur 2Ya« y [a] + v2 ourrur @ High breakdown input voltage (Vy 215V) ineut 143 -+ [6] eI Lk ts] — 2a. ineur © Output control input having same phase for 2 circuits 1" | © High fan-out, 3-state output output 2¥2 + are Ce —+1¥3 OUTPUT (lot = 24mA, lon = -15mA) wwrur tha —» EHD \\F Ha) 2ay nvr © Wide operating temperature range (Ta = -20 ~ +75°C) outeut 2¥) = [3] {i2] + 1¥4 ouTPUT APPLICATION ono og \\afa~e wweur General purpose, for use in industrial and consumer equipment. Outline 20P4 FUNCTIONAL DESCRIPTION The use of pnp transistors in the input circuit has enabled FUNCTION TABLE wow the achievement of small input load factor. With hysteresis [_A | 06 TY] characteristics, the buffer has a 3state noninverted output with high noise margin. poe | e fw | When output control input OC is tow, the output Y is LX | 4 | 2] low if input A is low and Y is high if A is high. When Note} 2: highimpatance GE is high, all of Y3, Yo, Ya, and Ya are in the high- Xo teeter impedance state, irrespective of the status of A. By connecting 10€ with 2G, it becomes possible to con- trol the output of all 8 circuits simultaneously. Output can be terminated by a load resistor of 13302 or over. For standard characteristics, see M74LS241P. CIRCUIT DIAGRAM (EACH BUFFER) © Veo acon . 10K ry 4 wong FG HE se KR To oTHER BUFFERS| uni 8 | MITSUBISHI | ate MiTSuBIS 2-269
OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUTS(NONINVERTED) ___OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUTS(NONINVERTED? ABSOLUTE MAXIMUM RATINGS (Ta=~20~ +75°C, unless otherwise noted) a a [vo | Oumnvoime ttt — [7 ossss OV i Oe <esn 180 x RECOMMENDED OPERATING CONDITIONS (Ta=—20~ +75°C. unless otherwise noted) 7 — Ta Sym _ Min ‘Typ Max Veo | Sei ton [ats [ses tv | [vor [| =a | ma ton | High-level output current Von 2V__ =is_[ ma Lowel output erent Vous0.8V | ae mA ELECTRICAL GHARACTERISTICS (Ta ~ —20~ + 75°C. unless otherwise noted ) ome Treen [win [Tree [ wm yO a Towel inet ape en ee | im | tetrte [Weo=s.25v.visiov | | | orf ma | Cowie int cart [veo=s.28v.vieoev | | [02 [ma los | Sorcraivousu ren Naw [Woo=s.28V.vonov «| ae |i ees | ma [ccc | Swsivawren.atoupalw i ~Veoms.asv.wisov || a [as | ma [isss [Sov corensateununot” | Veo=sieivivicasy TE [eT
4 All typical values are at Voc * 5V, Ta = 25°C,
Note 2: All measurements should be done quickly, and not more than one output should be shorted at time. SWITCHING CHARACTERISTICS (Voo=5v, Ta= 25°C, unless otherwise noted ) ome Ten con y [ Tecn_| Lowsonighievel,higrioiow level output propegetion | OL= 450F 8 [as | tie, tom not A wou Y (note ps [=] [tea | Onpmerbatnetotowinw | Rumer, Camas momar Te [ao [ne a
2 MITSUBISHI
2—270 ELECTRIC
OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUTS(NONINVERTED) . ‘Note 3: Measurement circuit [eran | oom | coms | ‘swt Ise generator tas the following yracter istic | closes | Vp = 3Vpp. Zo = 502 TIMING DIAGRAM (Reference level = 1.3V) A oe fey lea eng ot Y ae a ) MITSUBISHI | he MiTSUBIS e-en
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