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DM74LS258 数据表(PDF) 4 Page - National Semiconductor (TI) |
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DM74LS258 数据表(HTML) 4 Page - National Semiconductor (TI) |
4 / 8 page ’LS258B Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) (Continued) Symbol Parameter Conditions Min Typ Max Units (Note 1) IIL Low Level Input VCC e Max Select b 08 mA Current VI e 04V Other b 04 IOZH Off-State Output Current VCC e Max VO e 27V with High Level Output VIH e Min VIL e Max 20 m A Voltage Applied IOZL Off-State Output Current VCC e Max VO e 04V with Low Level Output VIH e Min VIL e Max b 20 m A Voltage Applied IOS Short Circuit VCC e Max DM54 b 20 b 100 mA Output Current (Note 2) DM74 b 20 b 100 ICCH Supply Current with VCC e Max (Note 3) 41 7 mA Outputs High ICCL Supply Current with VCC e Max (Note 3) 914 mA Outputs Low ICCZ Supply Current with VCC e Max (Note 3) 12 19 mA Outputs Disabled Note 1 All typicals are at VCC e 5V TA e 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 all outputs open and all possible inputs grounded while achieving the stated output conditions ’LS258B Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) From (Input) RL e 667X Symbol Parameter To (Output) CL e 45 pF CL e 150 pF Units Min Max Min Max tPLH Propagation Delay Time Data to 18 27 ns Low to High Level Output Output tPHL Propagation Delay Time Data to 18 27 ns High to Low Level Output Output tPLH Propagation Delay Time Select to 28 35 ns Low to High Level Output Output tPHL Propagation Delay Time Select to 35 42 ns High to Low Level Output Output tPZH Output Enable Time Output 15 27 ns to High Level Output Control to Y tPZL Output Enable Time Output 28 38 ns to Low Level Output Control to Y tPHZ Output Disable Time from Output 26 ns High Level Output (Note 4) Control to Y tPLZ Output Disable Time from Output 25 ns Low Level Output (Note 4) Control to Y Note 4 CL e 5 pF 4 |
类似零件编号 - DM74LS258 |
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类似说明 - DM74LS258 |
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