DM74LS244N
DM74LS244N Datasheet
DM74LS244 Octal 3-STATE Buffer/Line Driver/Line Receiver
| Part | Datasheet |
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DM74LS244N |
DM74LS244N (pdf) |
| Related Parts | Information |
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DM74LS244WM |
DM74LS244WM |
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| DM74LS244 Octal 3-STATE Buffer/Line Driver/Line Receiver DM74LS244 Octal 3-STATE Buffer/Line Driver/Line Receiver These buffers/line drivers are designed to improve both the performance and PC board density of 3-STATE buffers/ drivers employed as memory-address drivers, clock drivers, and bus-oriented transmitters/receivers. Featuring 400 mV of hysteresis at each low current PNP data line input, they provide improved noise rejection and high fanout outputs and can be used to drive terminated lines down to s 3-STATE outputs drive bus lines directly s PNP inputs reduce DC loading on bus lines s Hysteresis at data inputs improves noise margins s Typical IOL sink current 24 mA s Typical IOH source current −15 mA s Typical propagation delay times Inverting Noninverting 12 ns s Typical enable/disable time 18 ns s Typical power dissipation enabled Inverting 130 mW Noninverting 135 mW Ordering Code: Order Number Package Number Package Description DM74LS244WM M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide DM74LS244SJ M20D 20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide DM74LS244N N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs L = LOW Logic Level H = HIGH Logic Level X = Either LOW or HIGH Logic Level Z = High Impedance Output Y L H Z 2000 Fairchild Semiconductor Corporation DS008442 DM74LS244 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Note 1 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 VCC VIH VIL IOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature Electrical Characteristics over recommended operating free air temperature range unless otherwise noted Parameter Min Conditions Input Clamp Voltage VCC = Min, II = −18 mA Hysteresis VT+ − VT− VCC = Min Data Inputs Only HIGH Level Output Voltage LOW Level Output Voltage IOZH IOZL Off-State Output Current, HIGH Level Voltage Applied Off-State Output Current, LOW Level Voltage Applied VCC = Min, VIH = Min VIL = Max, IOH = −1 mA VCC = Min, VIH = Min VIL = Max, IOH = −3 mA VCC = Min, VIH = Min VIL = 0.5V, IOH = Max VCC = Min IOL = 12 mA VIL = Max |
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