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M74HC4511 Folha de dados(PDF) 1 Page - STMicroelectronics |
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1 / 13 page M54HC4511 M74HC4511 February 1993 BCD TO 7 SEGMENT LATCH/DECODER DRIVER B1R (Plastic Package) ORDER CODES : M54HC4011F1R M74HC4011M1R M74HC4011B1R M74HC4011C1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Internal Connection DESCRIPTION . HIGH SPEED tPD = 28 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 . HIGH SOURGE CURRENT |IOH| = 20 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH =tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 4511B The M54/74HC4511 is a high speed CMOS BCD- TO-7 SEGMENT LATCH/DECODER/DRIVER fab- ricated with silicon gate C 2MOS technology. It enables high speed latch and decode operation with identical pin connection and function to standard CMOS 4511B. The segment output driver, which is CMOS fabri- cated in silicon gate C 2MOS technology, has large IOH capability which enables common cathode Leds to be directly driven. When lamp test (LT) is taken ”L”, all segment out- puts will go to ”H”, and when blanking (BI) is taken ”L” and LT is taken ”H” all segment outputs will go to ”L”. These functions operate regardless of other inputs and are used to test the display. Input BI is used to pulse-modulate the brightness of the display. When an error input code (over 10) is applied to the BCD input, all segment outputs will go ”L” (turn off). All inputs are equipped with protection circuits against static discharge and transient excess volt- age. 1/13 |
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