DUAL 4-BIT DECADE AND BINARY COUNTERS The SN74390N is a dual 4-bit decade counter manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Category:** Logic - Counters, Dividers
- **Package / Case:** PDIP-16
- **Packaging:** Tube
- **Logic Type:** Decade Counter
- **Number of Bits:** 4 bits per counter (dual counter)
- **Trigger Type:** Negative Edge
- **Clock Frequency:** Typically up to 32 MHz
- **Supply Voltage (VCC):** 4.75V to 5.25V (standard 5V operation)
- **Operating Temperature Range:** 0°C to +70°C
- **Output Type:** TTL (Transistor-Transistor Logic)
### **Descriptions:**
- The SN74390N is a dual decade counter, meaning it contains two independent 4-bit counters in a single IC.
- Each counter consists of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-five section.
- It can be used as a divide-by-10 counter (BCD output) or as a divide-by-2 and divide-by-5 counter separately.
- The counters can be cascaded for higher counting ranges.
### **Features:**
- **Dual 4-bit decade counters** in a single IC.
- **Negative-edge triggered clock inputs** for counting.
- **Asynchronous clear (reset) function** for each counter.
- **TTL-compatible inputs and outputs.**
- **Wide operating voltage range** (4.75V to 5.25V).
- **Standard 16-pin DIP package** for easy prototyping.
- **Applications include frequency division, event counting, and time-delay generation.**
This information is based solely on the technical specifications provided by Texas Instruments for the SN74390N.
