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74193 Synchronous 4-Bit Up/Down Binary Counter IC (DIP-16) | Pro Tronix
Product Description
The 74193 Synchronous 4-Bit Up/Down Binary Counter IC is a high-speed TTL logic integrated circuit designed for synchronous counting, frequency division, and programmable digital countdown applications. Featuring separate clock inputs for counting up and counting down, dual borrow and carry outputs for easy cascading, and asynchronous master reset, this versatile counter provides precise binary state tracking for digital systems, frequency counters, and custom timing circuits.
Operating on standard 5V TTL logic levels, it allows asynchronous parallel loading of data through jam inputs, making it an essential component for programmable timers and digital sequencers.
⚠️ Logic & Power Tip: Keep your VCC supply strictly within the standard TTL range of 4.75V to 5.25V DC (5V nominal). Ensure unused clock inputs are held high or low properly to prevent false triggering during active counting cycles.
Technical & Architectural Highlights
Synchronous 4-Bit Operation: Internal flip-flops trigger synchronously for high-speed counting without ripple delay across bits.
Dual Clock Inputs: Separate dedicated pins for Up counting and Down counting simplify external control logic.
Asynchronous Parallel Load: Jam inputs allow instant loading of any 4-bit starting value when the Load pin is pulled low.
Cascadable Carry & Borrow Outputs: Terminal Count Up and Terminal Count Down outputs enable multi-chip cascading for larger counting capacities.
🧰 Recommended Logic ICs & Prototyping Essentials
Building digital counters or sequential logic systems? Pair this IC with these essential components:
7400-Series Logic ICs: Explore gates, registers, and decoders to expand your digital circuit: Pro Tronix Logic ICs Collection
IC Sockets (DIP-16 Solder Sockets): Protect your ICs during prototyping and allow easy chip swapping: Pro Tronix IC Sockets Collection
Solderless Breadboards & Jumpers: Fast, reliable prototyping platforms for logic testing: Pro Tronix Breadboards Collection
Resistor Kits & 7-Segment Displays: Essential passives and numeric displays for reading out counter output states: Pro Tronix Displays Collection
5V DC Bench Power Supplies: Stable power sources for TTL digital logic circuits: Pro Tronix Power Supplies Collection
Technical Specifications
| Parameter | Value / Specification |
| IC Model | SN74193 / 74193N |
| Logic Family | TTL (Transistor-Transistor Logic) |
| Function | Synchronous 4-Bit Up/Down Binary Counter |
| Operating Voltage | 4.75V to 5.25V DC (5V Nominal) |
| Package Type | DIP-16 (Through-Hole) |
Applications
Programmable Digital Timers: Setting specific countdown intervals and event triggers.
Frequency Counters & Tachometers: Measuring pulse frequencies and rotational speeds.
Sequential Address Generators: Stepping through memory locations or multiplexed display channels.
What’s in the Box
1 x 74193 Synchronous 4-Bit Up/Down Binary Counter IC (DIP-16).
All your electronics components and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!
Pinout Configuration (DIP-16)
The 74193 comes in a 16-pin dual in-line package (DIP-16). Looking at the top with the notch pointing left or up, the pin arrangement is:
| Pin Number | Designation | Description |
| Pin 1 | D1 | Parallel Data Input 1 (Bit 1) |
| Pin 2 | D0 | Parallel Data Input 0 (Bit 0 – LSB) |
| Pin 3 | CPDown | Count Down Clock Input |
| Pin 4 | CPUp | Count Up Clock Input |
| Pin 5 | Q0 | Flip-Flop Output 0 (LSB) |
| Pin 6 | Q1 | Flip-Flop Output 1 |
| Pin 7 | D2 | Parallel Data Input 2 (Bit 2) |
| Pin 8 | GND | Ground (0V) |
| Pin 9 | D3 | Parallel Data Input 3 (Bit 3 – MSB) |
| Pin 10 | Q3 | Flip-Flop Output 3 (MSB) |
| Pin 11 | Q2 | Flip-Flop Output 2 |
| Pin 12 | Carry Output | Terminal Count Up (Active Low) |
| Pin 13 | Borrow Output | Terminal Count Down (Active Low) |
| Pin 14 | Load Input | Parallel Load Input (Active Low) |
| Pin 15 | Master Reset | Master Reset (Active High) |
| Pin 16 | VCC | Positive Supply Voltage (5V DC) |
Truth Table (Function Table)
