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RDD104 Folha de dados(PDF) 1 Page - LSI Computer Systems |
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RDD104 Folha de dados(HTML) 1 Page - LSI Computer Systems |
1 / 2 page SELECTABLE 4 DECADE CMOS DIVIDER FEATURES: • Selectable Divide by 10 or 100 or 1,000 or 10,000 • Clock Input Shaping Network Accepts Fast or Slow Edge Inputs • Active Oscillator Network for External Crystal • Square Wave Output • Output TTL Compatible at +4.5 Volt Operation • High Noise Immunity • Reset • All Inputs Protected • +4.5V to +15V Operation (VDD-VSS) • Low Power Dissipaton • RDD104 (DIP); RDD104-S (SOIC) - See Figure 1 DC ELECTRICAL CHARACTERISTICS: (All voltages referenced to Vss) VDD -40°C +25°C +85°C UNIT Quiescent Device Current 4.5V 10 10 300 uA Max 10V 20 20 600 uA Max Output Voltage, Low Level 4.5V 0.01 0.01 0.05 V Min 10V 0.01 0.01 0.05 V Min High Level 4.5V 4.49 4.49 4.45 V Max 10V 9.99 9.99 9.95 V Max Input Noise Immunity 4.5V 1.3 1.3 1.3 V Min (Low and High) 10V 3.0 3.0 3.0 V Min Output Drive Current: N-Channel Sink Current 4.5V 2.3 1.9 1.6 mA Min (VOUT = Vss + 0.4V) 10V 5.0 4.0 3.5 mA Min P-Channel Source Current 4.5V 1.1 0.95 0.8 mA Min (VOUT = VDD - 1V) 10V 2.5 2.1 1.8 mA Min Input Capacitance (any input) 5.0 pF Max DESCRIPTION OF OPERATION: The RDD104 is a monolithic CMOS four decade divider circuit that advances on each negative transition of the input clock pulse. When the reset input is high the circuit is cleared to zero. The clock input is applied to a three stage inverting amplifier network whose output is brought out so that an external crystal network can be used to form an oscillator circuit. If the clock output is not used,the amplifier acts as an input buffer. Two select inputs are provided which enables the circuit to divide by 10, 100, 1,000 or 10,000. The Output Division is selected according to the following truth table: DIVIDER SELECT INPUTS: OUTPUT SELECT 2 SELECT 1 DIVISION 0 0 10,000 0 1 1,000 1 0 100 1 1 10 MAXIMUM RATINGS: PARAMETER SYMBOL VALUE UNIT Storage Temperature TSTG -65 to +150 °C Operating Temperature TA -40 to +85 °C DC Supply Voltage (VDD - VSS) +18 V Voltage at any input VIN VSS - 0.5 to VDD + 0.5 V January 2000 PIN ASSIGNMENT - TOP VIEW 1 2 3 4 5 6 7 8 FIGURE 1 VDD (+V) OUTPUT CLOCK OUTPUT CLOCK INPUT DIVIDER SELECT-1 DIVIDER SELECT-2 VSS (-V) RESET The information included herein is believed to be accurate and reliable. However, LSI Computer Systems, Inc. assumes no responsibilities for inaccuracies, nor for any infringements of patent rights of others which may result from its use. RDD104-092491 LSI/CSI LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 RDD 104 UL ® A3800 |
Nº de peça semelhante - RDD104 |
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Descrição semelhante - RDD104 |
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