? 1999 fairchild semiconductor corporation ds006435 www.fairchildsemi.com september 1991 revised may 1999 DM81LS95A ? dm81ls96a ? dm81ls97a 3-state octal buffer DM81LS95A ? dm81ls96a ? dm81ls97a 3-state octal buffer general description these devices provide eight, two-input buffers in each package. all employ low-power-schottky ttl technology. one of the two inputs to each buffer is used as a control line to gate the output into the high-impedance state, while the other input passes the data through the buffer. the DM81LS95A and dm81ls97a present true data at the out- puts, while the dm81ls96a is inverting. on the DM81LS95A and dm81ls96a versions, all eight 3-state enable lines are common, with access through a 2-input nor gate. on the dm81ls97a version, four buffers are enabled from one common line, and the other four buffers are enabled form another common line. in all cases the outputs are placed in the 3-state condition by applying a high logic level to the enable pins. features n typical power dissipation DM81LS95A, dm81ls97a 80 mw dm81ls96a 65 mw n typical propagation delay DM81LS95A, dm81ls97a 15 ns dm81ls96a 10 ns n low power-schottky, 3-state technology ordering code: devices also available in tape and reel. specify by appending the suffix letter x to the ordering code. connection diagram pin descriptions DM81LS95A and dm92ls96a note 1: both g 1 and g 2 must be low for outputs to be enabled. dm81ls97a order number package number package description DM81LS95Awm m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300 wide DM81LS95An n20a 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide dm81ls96awm m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300 wide dm81ls96an n20a 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide dm81ls97an n20a 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide pin names descriptions a1Ca8 inputs y1Cy8 outputs g 1Cg 2 active low output enables (note 1) pin names descriptions a1Ca8 inputs y1Cy8 outputs g 1 active low output enable (y1Cy4) g 2 active low output enable (y5Cy8) www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
www.fairchildsemi.com 2 DM81LS95A ? dm81ls96a ? dm81ls97a logic symbols DM81LS95A dm81ls96a dm81ls97a truth tables DM81LS95A dm81ls96a dm81ls97a inputs output g 1g 2a y h x x hi-z x h x hi-z llhh lll l inputs output g 1g 2a y h x x hi-z x h x hi-z llh l lll h inputs output g 1 a1Ca4 y1Cy4 h x hi-z lhh lll g 2 a5Ca6 y5Cy8 h x hi-z lhh lll www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
3 www.fairchildsemi.com DM81LS95A ? dm81ls96a ? dm81ls97a absolute maximum ratings (note 2) note 2: the absolute 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 defined in the electrical characteristics tables are not guaranteed at the absolute maximum ratings. the recommended operating conditions table will define the conditions for actual device operation. recommended operating conditions supply voltage 7v input voltage 7v operating free air temperature range 0 c to + 70 c storage temperature range - 65 c to + 150 c symbol parameter min nom max units v cc supply voltage 4.75 5 5.25 v v ih high level input voltage 2 v v il low level input voltage 0.8 v i oh high level output current - 5.2 ma i ol low level output current 24 ma t a free air operating temperature 0 70 c www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
www.fairchildsemi.com 4 DM81LS95A ? dm81ls96a ? dm81ls97a dc electrical characteristics DM81LS95A and dm81ls97a over recommended operating free air temperature range (unless otherwise noted) note 3: all typicals are at v cc = 5v, t a = 25 c. note 4: both g inputs are at 2v. note 5: both g inputs are at 0.4v. note 6: not more than one output should be shorted at a time, and the duration should not exceed one second. ac electrical characteristics DM81LS95A and dm81ls97a v cc = 5v, t a = 25 c note 7: c l = 5 pf. symbol parameter conditions min typ max units (note 3) v i input clamp voltage v cc = min, i i = - 18 ma - 1.5 v v oh high level output voltage v cc = min, i oh = max 2.7 v v il = max, v ih = min v ol low level output voltage v cc = min, i ol = max 0.5 v i ol = max, v ih = min i ol = 12 ma, v cc = min 0.4 i i input current @ max v cc = max, v i = 7v 0.1 ma input voltage i ih high level input current v cc = max, v i = 2.7v 20 m a i il low level input current v cc = max v i = 0.5v a (note 4) - 20 m a v i = 0.4v a (note 5) - 50 g - 50 i ozh off-state output current v cc = max, v o = 2.4v 20 m a with high level output v ih = min, v il = max voltage applied i ozl off-state output current v cc = max, v o = 0.4v - 20 m a with low level output v ih = min, v il = max voltage applied i os short circuit v cc = max - 20 - 100 ma output current (note 6) i cc supply current v cc = max (note 4) 16 26 ma symbol parameter r l = 667 w units c l = 50 pf c l = 150 pf min max min max t plh propagation delay time 16 25 ns low-to-high level output t phl propagation delay time 28 40 ns high-to-low level output t pzh output enable time 25 30 ns to high level output t pzl output enable time 30 42 ns to low level output t phz output disable time 20 ns from high level output (note 7) t plz output disable time 27 ns from low level output (note 7) www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
5 www.fairchildsemi.com DM81LS95A ? dm81ls96a ? dm81ls97a dc electrical characteristics dm81ls96a over recommended operating free air temperature range (unless otherwise noted) note 8: all typicals are at v cc = 5v, t a = 25 c. note 9: both g inputs are at 2v. note 10: both g inputs are at 0.4v. note 11: not more than one output should be shorted at a time, and the duration should not exceed one second. ac electrical characteristics dm81ls96a v cc = 5v, t a = 25 c note 12: c l = 5 pf. symbol parameter conditions min typ max units (note 8) v i input clamp voltage v cc = min, i i = - 18 ma - 1.5 v v oh high level output voltage v cc = min, i oh = max 2.7 v v il = max, v ih = min v ol low level output voltage v cc = min, i ol = max 0.5 v i ol = max, v ih = min i ol = 12 ma, v cc = min 0.4 i i input current @ max v cc = max, v i = 7v 0.1 ma input voltage i ih high level input current v cc = max, v i = 2.7v 20 m a i il low level input current v cc = max v i = 0.5v a (note 9) - 20 m a v i = 0.4v a (note 10) - 50 g - 50 i ozh off-state output current v cc = max, v o = 2.4v 20 m a with high level output v ih = min, v il = max voltage applied i ozl off-state output current v cc = max, v o = 0.4v - 20 m a with low level output v ih = min, v il = max voltage applied i os short circuit v cc = max - 20 - 100 ma output current (note 11) i cc supply current v cc = max (note 10) 13 21 ma symbol parameter r l = 667 w units c l = 50 pf c l = 150 pf min max min max t plh propagation delay time 10 16 ns low-to-high level output t phl propagation delay time 17 30 ns high-to-low level output t pzh output enable time 15 30 ns to high level output t pzl output enable time 35 45 ns to low level output t phz output disable time 20 ns from high level output (note 12) t plz output disable time 27 ns from low level output (note 12) www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
www.fairchildsemi.com 6 DM81LS95A ? dm81ls96a ? dm81ls97a physical dimensions inches (millimeters) unless otherwise noted 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300 wide package number m20b www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
physical dimensions inches (millimeters) unless otherwise noted (continued) 7 www.fairchildsemi.com DM81LS95A ? dm81ls96a ? dm81ls97a 3-state octal buffer physical dimensions inches (millimeters) unless otherwise noted (continued) 20-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide package number n20a fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. life support policy fairchilds products are not authorized for use as critical components in life support devices or systems without the express written approval of the president 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, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. a critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com www. datasheet datasheet datasheet datasheet 4u 4u4u 4u .com
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