CD14538 (CD4538)
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The CD4538 is a dual precision monostable multivibrator IC designed to generate accurate time delays or pulses. It features two independent monostable circuits, each capable of producing a single pulse in response to an input trigger. This IC is commonly used in applications requiring precise timing control, such as timers, pulse generators, and delay circuits. The CD4538 operates at a wide range of voltages and is known for its stable operation and ease of use.
Key Features:
- Dual monostable multivibrator circuits
- Wide supply voltage range
- Stable operation over temperature and voltage variations
- Triggered from a single external resistor and capacitor
- Output pulse duration adjustable by external components
- Capable of generating precise pulses or time delays
- Logic Family: CMOS
- Number of Monostable Multivibrators: 2
- Supply Voltage Range: Typically 3V to 15V
- Trigger Input Voltage (V_IH): 70% of V_DD minimum
- Trigger Input Current (I_I): -0.5mA to +1.0mA maximum
- Output Drive Capability: 10 LSTTL Loads
- Propagation Delay: Typically 100ns at V_DD = 5V, C_L = 15pF
- Precision timing circuits
- Pulse width modulation
- Delay generators
- Timers and time delay circuits
- Pulse shaping circuits
Technical Specifications:
- Logic Family: CMOS
- Number of Channels: 3
- Switch Configuration: Single-Pole Double-Throw (SPDT)
- Supply Voltage Range: 3V to 15V
- “ON” Resistance (R_ON): 125Ω typical at V_DD = 10V
- “OFF” Leakage Current (I_OFF): ±100pA typical at V_DD = 10V
- Control Input Voltage (V_IH): 0.7 V_DD min, 0.3 V_DD max
- Maximum Operating Frequency: 40 MHz at V_DD = 10V
Applications:
- Signal routing and switching
- Analog and digital multiplexing
- Audio and video signal processing
- Data acquisition systems
- Test equipment