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DM74AS257 bảng dữ liệu(PDF) 3 Page - Fairchild Semiconductor |
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DM74AS257 bảng dữ liệu(HTML) 3 Page - Fairchild Semiconductor |
3 / 6 page 3 www.fairchildsemi.com Absolute Maximum Ratings(Note 1) 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 Electrical Characteristics over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C. Note 2: The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. Supply Voltage, VCC 7V Input Voltage 7V Voltage Applied to Disabled Output 5.5V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature Range −65°C to +150°C Typical θ JA N Package 75.0 °C/W Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.5 5 5.5 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −15 mA IOL LOW Level Output Current 48 mA TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units VIK Input Clamp VCC = 4.5V, II = −18 mA −1.2 V Voltage VOH HIGH Level VCC = 4.5V, IOH = Max 2.4 3.2 V Output Voltage IOH = −2 mA, VCC = 4.5V to 5.5V VCC − 2V VOL LOW Level VCC = 4.5V, IOL = Max 0.35 0.5 V Output Voltage II Input Current @ VCC = 5.5V, VIH = 7V A, B, G 0.1 mA Max Input Voltage Select 0.2 IIH HIGH Level VCC = 5.5V, VIH = 2.7V A, B, G 20 µA Input Current Select 40 IIL LOW Level VCC = 5.5V, VIL = 0.4V Select −1 mA Input Current All Others −0.5 IO (Note 2) Output Drive Current VCC = 5.5V, VO = 2.25V −30 −112 mA IOZH Off-State Output Current, VCC = 5.5V −50 µA HIGH Level Voltage Applied VO = 2.7V IOZL Off-State Output Current, VCC = 5.5V −50 µA LOW Level Voltage Applied VO = 0.4V ICCH Supply DM74AS257 Outputs HIGH 12.9 19.7 mA Current DM74AS258 8.8 13.5 mA ICCL Supply DM74AS257 VCC = 5.5V Outputs LOW 19 30.6 mA Current DM74AS258 Outputs Open 15.8 24.6 mA ICCZ Supply DM74AS257 Outputs Disabled 19.7 31.9 mA Current DM74AS258 15.5 25.2 mA |
Số phần tương tự - DM74AS257 |
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Mô tả tương tự - DM74AS257 |
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