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SN74LS248N Datasheet(PDF) 4 Page - Motorola, Inc |
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SN74LS248N Datasheet(HTML) 4 Page - Motorola, Inc |
4 / 8 page 5-405 FAST AND LS TTL DATA SN54/74LS247 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High BI / RBO 54, 74 – 50 µA IOL Output Current — Low BI / RBO 54 74 1.6 3.2 mA VO(off) Off-State Output Voltage a – g 54, 74 15 V IO(on) On-State Output Current a – g On-State Output Current a – g 54 74 12 24 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Limits Unit Test Conditions Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 V Guaranteed Input LOW Voltage for All Inputs VIL Input LOW Voltage 74 0.8 V Guaranteed Input LOW Voltage for All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage BI / RBO 54 2.4 4.2 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VOH Output HIGH Voltage BI / RBO 74 2.4 4.2 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VOL Output LOW Voltage BI / RBO 54, 74 0.25 0.4 V IOL = 1.6 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VOL Output LOW Voltage BI / RBO 74 0.35 0.5 V IOL = 3.2 mA VIN = VIL or VIH per Truth Table IO(off) Off-State Output Current a – g 54, 74 250 µA VCC = MAX, VIH = 2.0 V, VO(off) = 15 V, VIL = MAX VO(on) On-State Output Voltage a – g 54, 74 0.25 0.4 V IO(on) = 12 mA VCC = MIN, VIH = 2.0 V, VIL per Truth Table VO(on) On-State Output Voltage a – g 74 0.35 0.5 V IO(on) = 24 mA VCC = MIN, VIH = 2.0 V, VIL per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current Any Input, except BI / RBO – 0.4 mA VCC = MAX, VIN = 0.4 V IIL BI / RBO – 1.2 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current BI / RBO (Note 1) – 0.3 – 2.0 mA VCC = MAX ICC Power Supply Current 7.0 13 mA VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C) Symbol Parameter Limits Unit Test Conditions Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Turn-Off Time from A Input Turn-On Time from A Input 100 100 ns CL = 15 pF, RL = 665 Ω tPHL tPLH Turn-Off Time from RBI Input Turn-On Time from RBI Input 100 100 ns CL = 15 pF, RL = 665 Ω |
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