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M74HC237M1R Arkusz danych(PDF) 1 Page - STMicroelectronics |
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M74HC237M1R Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 11 page M54HC237 M74HC237 October 1992 3 TO 8 LINE DECODER LATCH B1R (Plastic Package) ORDER CODES : M54HC237F1R M74HC237M1R M74HC237B1R M74HC237C1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Internal Connection . HIGH SPEED tPD = 12 ns (TYP.) at VCC =5 V . LOW POWER DISSIPATION ICC =4 µA (MAX.) AT TA =25 °C . HIGH NOISE IMMUNITY VNIH =VNIL =28 % VCC (MIN.) . OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS . SYMMETRICAL OUTPUT IMPEDANCE IOH =IOL = 4 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH =tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS237 The M54/74HC237 is a high speed CMOS 3 TO 8 LINE DECODER LATCH fabricated in silicon gate C 2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. When GL goes from low to high, the address present at the select inputs (A, B, C) is stored in the latches. As long as GL remains high no address changes will be recognized. Output enable controls, G1 and G2 control the state of the outputs independantly of the select or latch-enable inputs. All of the outputs are low unless G1 is high and G2 is low. The ’HC237 is ideally suited for the implementation of glitch-free decoders in stored-address applications in bus oriented sys- tems. All inputs are equipped with protection circuits against static discharge and transient excess voltage. DESCRIPTION 1/11 |
Podobny numer części - M74HC237M1R |
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Podobny opis - M74HC237M1R |
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