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?006 fairchild semiconductor corporation 1 www.fairchildsemi.com april 2006 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs 74ac240, 74act240 octal buffer/line driver with 3-state outputs general description the ac/act240 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved pc board density. features i cc and i oz reduced by 50% inverting 3-state outputs drive bus lines or buffer memory address registers outputs source/sink 24ma a ct240 has ttl-compatible inputs ordering information device also available in tape and reel. specify by appending suffix letter ??to the ordering code. pb-free package per jedec j-std-020b. note: 1. ?nl?indicates pb-free package (per jedec j-std-020b). please use order number as indicated. order number package number package description 74ac240sc m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide 74ac240sj m20d 20-lead small outline package (sop), eiaj type ii, 5.3mm wide 74ac240mtc mtc20 20-lead thin shrink small outline package (tssop), jedec mo-153, 4.4mm wide 74ac240pc n20a 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300" wide 74act240sc m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide 74act240sc_nl (1) m20b pb-free 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide 74act240sj m20d 20-lead small outline package (sop), eiaj type ii, 5.3mm wide 74act240mtc mtc20 20-lead thin shrink small outline package (tssop), jedec mo-153, 4.4mm wide 74act240pc n20a 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300" wide 74act240pc_nl (1) n20a pb-free 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300" wide fact ? is a trademark of fairchild semiconductor corporation.
2 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs logic symbol ieee/iec connection diagram pin descriptions t ruth tables h = high voltage level l = low voltage level x = immaterial z = high impedance o 0 oe 1 en i 0 o 1 i 1 o 2 i 2 o 3 i 3 o 4 i 4 o 5 i 5 o 6 i 6 o 7 i 7 oe 2 en 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 oe 1 i 0 o 4 i 1 o 5 i 2 o 6 i 3 o 7 gnd v cc oe 2 o 0 i 4 o 1 i 5 o 2 i 6 o 3 i 7 pin names description oe 1 , oe 2 3-state output enable inputs i 0 ? 7 inputs o 0 ? 7 outputs inputs outputs (pins 12, 14, 16, 18) oe 1 i n ll h lh l hx z inputs outputs (pins 3, 5, 7, 9) oe 2 i n ll h lh l hx z
3 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs absolute maximum ratings the ?bsolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed. the device should not be operated at these limits. the parametric values de?ed in the electrical characteristics tables are not guaranteed at the absolute maximum ratings. the ?ecommended operating conditions table will de?e the conditions for actual device operation. recommended operating conditions symbol parameter value units v cc supply voltage ? 0.5 to + 7.0 v i ik dc input diode current v i = ? 0.5v v i = v cc + 0.5v ? 20 + 20 ma v i dc input voltage ? 0.5 to v cc + 0.5 v i ok dc output diode current v o = ? 0.5v v o = v cc + 0.5v ? 20 + 20 ma v o dc output voltage ? 0.5 to v cc + 0.5 v i o dc output source or sink current 50 ma i cc or i gnd dc v cc or ground current per output pin 50 ma t stg storage temperature ? 65 c to + 150 cc t j j unction temperature, pdip 140 ? symbol parameter value units v cc supply voltage ac act 2.0 to 6.0 4.5 to 5.5 v v i input voltage 0 to v cc v v o output voltage 0 to v cc v t a operating temperature ? 40 to + 85 c ? v/ ? t minimum input edge rate ac devices, v in from 30% to 70% of v cc v cc @ 3.3v, 4.5v, 5.5v 125 mv/ns ? v/ ? t minimum input edge rate a ct devices, v in from 0.8v to 2.0v v cc @ 4.5v, 5.5v 125 mv/ns
4 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs dc electrical characteristics for ac notes: 2. all outputs loaded; thresholds on input associated with output under test. 3. maximum test duration 2.0ms, one output loaded at a time. 4. i in and i cc @ 3.0v are guaranteed to be less than or equal to the respective limit @ 5.5v v cc . symbol parameter conditions v cc (v) t a = + 25 ct a = ? 40 c to + 85 c units t yp. guaranteed limits v ih minimum high level input voltage v out = 0.1v or v cc ? 0.1v 3.0 1.5 2.1 2.1 v 4.5 2.25 3.15 3.15 5.5 2.75 3.85 3.85 v il maximum low level input voltage v out = 0.1v or v cc ? 0.1v 3.0 1.5 0.9 0.9 v 4.5 2.25 1.35 1.35 5.5 2.75 1.65 1.65 v oh minimum high level output voltage i out = ? 50 a 3.0 2.99 2.9 2.9 v 4.5 4.49 4.4 4.4 5.5 5.49 5.4 5.4 v in = v il or v ih i oh = ? 12ma 3.0 2.56 2.46 i oh = ? 24ma 4.5 3.86 3.76 i oh = ? 24ma (2) 5.5 4.86 4.76 v ol maximum low level output voltage i out = 50 a 3.0 0.002 0.1 0.1 v 4.5 0.001 0.1 0.1 5.5 0.001 0.1 0.1 v in = v il or v ih i ol = 12ma 3.0 0.36 0.44 i ol = 24ma 4.5 0.36 0.44 i ol = 24ma (2) 5.5 0.36 0.44 i in (4) maximum input leakage current v i = v cc , gnd 5.5 0.1 1.0 a i oz maximum 3-state leakage current v i (oe) = v il , v ih v i = v cc , gnd v o = v cc , gnd 5.5 0.25 2.5 a i old minimum dynamic output current (3) v old = 1.65v max 5.5 75 ma i ohd v ohd = 3.85v min 5.5 ? 75 ma i cc (4) maximum quiescent supply current v in = v cc or gnd 5.5 4.0 40.0 a
5 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs dc electrical characteristics for act notes: 5. all outputs loaded; thresholds on input associated with output under test. 6. maximum test duration 2.0 ms, one output loaded at a time. symbol parameter conditions v cc (v) t a = + 25 ct a = ? 40 c to + 85 c units ty p guaranteed limits v ih minimum high level input voltage v out = 0.1v or v cc ? 0.1v 4.5 1.5 2.0 2.0 v 5.5 1.5 2.0 2.0 v il maximum low level input voltage v out = 0.1v or v cc ? 0.1v 4.5 1.5 0.8 0.8 v 5.5 1.5 0.8 0.8 v oh minimum high level output voltage i out = ? 50 a 4.5 4.49 4.4 4.4 v 5.5 5.49 5.4 5.4 v in = v il or v ih i oh = ? 24ma 4.5 3.86 3.76 i oh = ? 24ma (5) 5.5 4.86 4.76 v ol maximum low level output voltage i out = 50 a 4.5 0.001 0.1 0.1 v 5.5 0.001 0.1 0.1 v in = v il or v ih i ol = 24ma 4.5 0.36 0.44 i ol = 24ma (5) 5.5 0.36 0.44 i in maximum input leakage current v i = v cc , gnd 5.5 0.1 1.0 a i oz maximum 3-state leakage current v i = v il , v ih, v o = v cc , gnd 5.5 0.25 2.5 a i cct maximum i cc /input v i = v cc ? 2.1v 5.5 0.6 1.5 ma i old minimum dynamic output current (6) v old = 1.65v max 5.5 75 ma i ohd v ohd = 3.85v min 5.5 ? 75 ma i cc maximum quiescent supply current v in = v cc or gnd 5.5 4.0 40.0 a
6 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs ac electrical characteristics for ac notes: 7. voltage range 3.3 is 3.3v 0.3v, voltage range 5.0 is 5.0v 0.5v ac electrical characteristics for act notes: 8. voltage range 5.0 is 5.0v 0.5v capacitance symbol parameter v cc (v) (7) t a = units + 25 c ? 40 c to + 85 c c l = 50 pf c l = 50 pf min. typ. max. min. max. t plh propagation delay data to output 3.3 1.5 6.0 8.0 1.0 9.0 ns 5.0 1.5 4.5 6.5 1.0 7.0 t phl propagation delay data to output 3.3 1.5 5.5 8.0 1.0 8.5 ns 5.0 1.5 4.5 6.0 1.0 6.5 t pzh output enable time 3.3 1.5 6.0 10.5 1.0 11.0 ns 5.0 1.5 5.0 7.0 1.0 8.0 t pzl output enable time 3.3 1.5 7.0 10.0 1.0 11.0 ns 5.0 1.5 5.5 8.0 1.0 8.5 t phz output disable time 3.3 1.5 7.0 10.0 1.0 10.5 ns 5.0 1.5 6.5 9.0 1.0 9.5 t plz output disable time 3.3 1.5 7.5 10.5 1.0 11.5 ns 5.0 1.5 6.5 9.0 1.0 9.5 symbol parameter v cc (v) (8) t a = units + 25 c ? 40 c to + 85 c c l = 50 pf c l = 50 pf min. typ. max. min. max. t plh propagation delay data to output 5.0 1.5 6.0 8.5 1.5 9.5 ns t phl propagation delay data to output 5.0 1.5 5.5 7.5 1.5 8.5 ns t pzh output enable time 5.0 1.5 7.0 8.5 1.0 9.5 ns t pzl output enable time 5.0 2.0 7.0 9.5 1.5 10.5 ns t phz output disable time 5.0 2.0 8.0 9.5 2.0 10.5 ns t plz output disable time 5.0 2.5 6.5 10.0 2.0 10.5 ns symbol parameter conditions typ. units c in input capacitance v cc = open 4.5 pf c pd po w er dissipation capacitance v cc = 5.0v 45.0 pf
7 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs physical dimensions inches (millimeters) unless otherwise noted 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide package number m20b
8 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs physical dimensions (continued) millimeters unless otherwise noted pb-free 20-lead small outline package (sop), eiaj type ii, 5.3mm wide package number m20d
9 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs physical dimensions (continued) millimeters unless otherwise noted 20-lead thin shrink small outline package (tssop), jedec mo-153, 4.4mm wide package number mtc20
10 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs physical dimensions (continued) inches (millimeters) unless otherwise noted 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300" wide package number n20a
11 www.fairchildsemi.com 74ac240, 74act240 rev. 1.0.0 74ac240, 74act240 octal buffer/line driver with 3-state outputs disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. trademarks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. life support policy fa irchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information preliminary no identification needed obsolete this datasheet contains the design specifications for product development. specifications may change in any manner without notice. this datasheet contains preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. formative or in design first production full production not in production isoplanar littlefet microcoupler microfet micropak microwire msx msxpro ocx ocxpro optologic optoplanar p acman pop power247 poweredge f ast f astr fps frfet globaloptoisolator gto hisec i 2 c i-lo implieddisconnect intellimax rev. i18 acex activearray bottomless build it now coolfet crossvolt dome ecospark e 2 cmos ensigna f act f act quiet series powersaver powertrench qfet qs qt optoelectronics quiet series rapidconfigure rapidconnect serdes scalarpump silent switcher smart start spm ste alth superfet supersot-3 supersot-6 supersot-8 syncfet tcm tinylogic tinyopto trutranslation uhc ultrafet unifet vcx wire across the board. around the world. the power franchise programmable active droop

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