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HEF4720BT Datasheet(PDF) 3 Page - NXP Semiconductors |
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HEF4720BT Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 16 page January 1995 3 Philips Semiconductors Product specification 256-bit, 1-bit per word random access memories HEF4720B HEF4720V IDD LIMITS See below. FUNCTION TABLE Notes 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial Z = high impedance OFF-state CS W O O MODE L H data written complement of data write into memory written into memory L L data written complement of data read into memory written into memory H X Z Z inhibit PINNING CS chip select input (active LOW) W write enable input D data input A0 to A7 address inputs O 3-state output (active HIGH) O 3-state output (active LOW) SUPPLY VOLTAGE The values given at VDD = 15 V in the following DC and AC characteristics, are not applicable to the HEF4720V, because of its lower supply voltage range. DC CHARACTERISTICS VSS =0 V RATING RECOMMENDED OPERATING STAND-BY MIN. HEF4720B −0,5 to 18 3,0 to 15,0 3 V HEF4720V −0,5 to 18 4,5 to 12,5 3 V VDD V VOL V SYMBOL Tamb (°C) −40 +25 +85 MIN. MAX. MIN. MAX. MIN. MAX. Output current 4,75 0,4 2,4 2 1,6 mA LOW 10 0,5 IOL 4,8 4 3,2 mA 15 1,5 10,0 10 7,5 mA Quiescent device 5 25 25 200 µA current 10 IDD 50 50 400 µA 15 100 100 800 µA Input leakage current HEF4720V 10 ±I IN 0,3 0,3 1 µA HEF4720B 15 0,3 0,3 1 µA |
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