74HC4040D Falling Edge 12-Stage Binary Counter 2V-6V 25mA 98MHz SOIC-16 SMD IC
The 74HC4040D is a high-speed, CMOS-level 12-stage binary ripple counter featuring a clock input (CP), twelve parallel outputs (Q0 to Q11), and an overriding asynchronous master reset input (MR). The internal state of the counter advances sequentially on the HIGH-to-LOW (negative edge) transition of the clock input. Activating the master reset input with a HIGH voltage level clears all counter stages and completely forces all parallel outputs LOW, operating independently of the clock’s state. Each individual counter stage is constructed as a static toggle flip-flop. Built-in clamp diodes on the inputs allow the safe utilization of current-limiting resistors, enabling the chip to cleanly interface with signal voltages that exceed the positive supply line ().
Features
- Wide Supply Voltage Range
- Low Power Dissipation
- High Noise Immunity
- Input Logic Levels
- Excellent Latch-up Performance
- Robust ESD Protection
- Standardization
Specifications
| Parameter / Specification | Value / Conditions | Unit |
|---|---|---|
| Package Name | SO16 | – |
| Supply Voltage (VCC) | 2.0 to 6.0 | V |
| Input Voltage (VI) | 0 to VCC | V |
| Output Voltage (VO) | 0 to VCC | V |
| Ambient Temperature (Tamb) | -40 to +125 | °C |
| Limiting Values (Absolute Maximums) | ||
| Supply Voltage Range | -0.5 to +7.0 | V |
| Input Clamping Current (IIK) | ±20 (for VI < -0.5 V or VI > VCC + 0.5 V) | mA |
| Output Clamping Current (IOK) | ±20 (for VO < -0.5 V or VO > VCC + 0.5 V) | mA |
| Continuous Output Current (IO) | ±25 | mA |
| Supply / Ground Current (ICC / IGND) | ±50 | mA |
| Total Power Dissipation (Ptot) | 500 (Derates linearly with 12.4 mW/K above 110 °C) | mW |
| Storage Temperature (Tstg) | -65 to +150 | °C |
| Input Capacitance (CI) | 3.5 (Typical) | pF |
| Power Dissipation Capacitance (CPD) | 20 (Typical) | pF |
| Max Clock Frequency (fmax at 2.0 V) | 6 (Min) / 27 (Typ) | MHz |
| Max Clock Frequency (fmax at 4.5 V) | 30 (Min) / 82 (Typ) | MHz |
| Max Clock Frequency (fmax at 6.0 V) | 35 (Min) / 98 (Typ) | MHz |
Applications
- Frequency dividing circuits
- Time delay circuits
- Control counters
Package Content
- 1 x 74HC4040D Falling Edge 12-Stage Binary Counter 2V-6V 25mA 98MHz SOIC-16 SMD IC