Overview
The 74HC4020DB,112 is a 14-stage binary ripple counter produced by NXP Semiconductors. This integrated circuit is part of the 74HC series and is designed for high-speed applications. It features a clock input (CP) and an overriding asynchronous master reset input (MR), along with twelve fully buffered parallel outputs (Q0, Q3 to Q13). The counter advances on the HIGH-to-LOW transition of the clock input, and a HIGH on the master reset input clears all counter stages and forces all outputs LOW, independent of the clock input state. Each counter stage is a static toggle flip-flop, and the device includes clamp diodes to enable the use of current limiting resistors for interfacing inputs to voltages in excess of VCC.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Supply Voltage (VCC) | 2.0 to 6.0 | V | |
| Operating Temperature | -40 to +125 | °C | |
| Maximum Clock Frequency | 101 MHz (74HC), 52 MHz (74HCT) | MHz | VCC = 5 V, CL = 50 pF |
| Propagation Delay (CP to Q0) | 11 to 15 ns (74HC), 17 to 19 ns (74HCT) | ns | VCC = 5 V, CL = 15 pF |
| Input Capacitance (CI) | 3.5 pF | pF | |
| Power Dissipation Capacitance (CPD) | 19 to 20 pF | pF | |
| Package Type | 16-SSOP (0.209", 5.30mm Width) |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
- Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V).
- Input levels: CMOS level for 74HC4020 and TTL level for 74HCT4020.
- ESD protection: HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V) and CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- Multiple package options.
Applications
- Frequency dividing circuits.
- Time delay circuits.
- Control counters.
Q & A
- What is the 74HC4020DB,112?
The 74HC4020DB,112 is a 14-stage binary ripple counter integrated circuit produced by NXP Semiconductors.
- What is the supply voltage range for the 74HC4020DB,112?
The supply voltage range is from 2.0 V to 6.0 V.
- How does the counter advance?
The counter advances on the HIGH-to-LOW transition of the clock input (CP).
- What is the function of the master reset input (MR)?
A HIGH on the master reset input clears all counter stages and forces all outputs LOW, independent of the clock input state.
- What are the propagation delays for the 74HC4020DB,112?
The propagation delay from CP to Q0 is 11 to 15 ns for 74HC and 17 to 19 ns for 74HCT, with VCC = 5 V and CL = 15 pF.
- What is the maximum clock frequency for the 74HC4020DB,112?
The maximum clock frequency is 101 MHz for 74HC and 52 MHz for 74HCT, with VCC = 5 V and CL = 50 pF.
- What are the ESD protection levels for the 74HC4020DB,112?
The device has ESD protection levels of HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V) and CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- What are the typical applications of the 74HC4020DB,112?
Typical applications include frequency dividing circuits, time delay circuits, and control counters.
- What is the package type for the 74HC4020DB,112?
The package type is 16-SSOP (0.209", 5.30mm Width).
- Is the 74HC4020DB,112 still in production?
No, the 74HC4020DB,112 has been discontinued.
