DM7123 NSC | Alldatasheet

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= Nn GA National ° DM7123 Quad 2-Input Data Selectors/Multiplexers General Description Features This device contains four 2-input multiplexers with common __™ Pin equivalents popular DM9322 and DM54/DM74157 input select logic and common output disable circuitry. The multiplexers DM7123 provides TRI-STATE® outputs. When the enable/ —™ Both conventional TTL and TRI-STATE outputs strobe input is at a low logic level, the outputs of all devices available are conventional TTL. However, when the enable/strobe in- — m Typical propagation delay 9.5 ns Put is raised to a high logic level, the outputs of the M7123. Typical power dissipation 200 mW go to the high-impedance third state. This device provides the designer with TRI-STATE and/or low power pin/pin re- placements for the popular DM9322 and DM54/DM74157 multiplexers. eee Connection Diagram Dual-in-Line Package INPUTS: INPUTS: —— ourut —— ourrut Voc ENABLE A4 a 4 a3 B3 v3 16 15 4 13 12 WwW 10 9 1 2 3 4 5 6 7 8 s al BI ¥1 a2 B82 v2 GND wNPUTS: INPUTS: TUF /e674-1 Order Number DM7123J or DM7123W See NS Package Number J16A or W16A Function Table [_tmpute | outputs jatel| vy L L L x L L L H x H L H x L Lt L H x H H H x x x Hi-Z L = Low Logic Level, H = High Logic Level X = Either Low or High Logic Level Hi-Z = TRI-STATE (Outputs are disabled) 4-245,

| Absolute Maximum Ratings (note) If Military/Aerospace specified devices are required, Note: The “Absolute Maximum Ratings” are those values please contact the National Semiconductor Sales beyond which the safety of the device cannot be guaran- Office/Distributors for availability and specifications. teed. The device should not be operated at these limits. The ‘Supply Voltage n parametric values defined in the “Electrical Characteristics” Input Volta 5.5V table are not guaranteed at the absolute maximum ratings. put Voltage : The “Recommended Operating Conditions” table will define Operating Free Air Temperature Range the conditions for actual device operation. DM71 —55°C to + 125°C Storage Temperature Range 65°C to + 150°C Recommended Operating Conditions Symvet ee ee eee ve Voc Supply Voltage [as | os ss Tv im High Level Input Voltage ee ee Vi Low Level Input Voltage po Tw Ta Free ArrOperating Temperate | ss | | tas | Electrical Characteristics overrecommended operating free air temperature range (unless otherwise noted) Typ Symbol [ream Conditions a (Note 1) [we | baidad rm Input Camp vonage | _Voo = Min, = ~12 ma rn ee Vou High Level Output Voc = Min, lon = Max 24 Vv Voltage Vit = Max, Viq = Min ° Voi Low Level Output Voc = Min, lo. = Max 04 v Voltage Vin = Min, Vi_ = Max : \\ Input Current @ Max Voc = Max, V; = 5.5V 1 mA Input Voltage ha High Level Input Current | Voc = Max, Vi = 2.4V rr ee ee ee i Low Level Input Current | Voc = Max, Vj = 0.4V [fs =t6 | ima lozH Off-State Output Current _ _ with High Level Output yoo = iar No" aN 40 pA Voltage Applied iW vette loz Off-State Output Current _ _ with Low Level Output yoo = yer No * Mae —40 BA Voltage Applied qd ae los Short Circuit Voc = Max _ Output Current (Note 2) 70 ma loa Supply Current Voo = Max (Note 3) a Note 1: All typicals are at Voc = 5V, Ta = 25°C. Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 3: icc is measured with the inputs grounded, and all outputs open. 4-246

Switching Characteristics at voc = 5v and Ta = 25°C (See Section 1 for Test Waveforms and Output Load) | 9 a ‘ewe Fin [ain | tPLH Propagation Delay Time Data to 4 ns Low to High Level Output Output tPHL Propagation Delay Time Datato ns High to Low Level Output Output tPLH Propagation Delay Time Select to ns Low to High Level Output Output tPpHL Propagation Delay Time Select to ns High to Low Level Output Output tzu Output Enable Time to Enable ns High Level Output toa tezi Output Enable Time to Enable ns Low Level Output toa teuz Output Disable Time from Enable ns High Level Output toQ teiz Output Disable Time from Enable 27 ns Low Level Output toa Logic Diagram Ce a eT) 0 ay Joo fan fon fo lo Jo Je ‘SELECT Vege PI 16 CHO=PN 8 (15) ENABLE: 12) C ” C) u“ % a " TUF /6574-2 4-247