40193 IC 4-Bit Binary Up/Down Counter
The CD40193BE is a synchronous 4-bit binary up/down counter IC built using CMOS technology. Designed to offer high-speed performance with low power consumption, this IC is ideal for applications requiring reliable digital counting in both upward and downward directions. Unlike asynchronous counters, the CD40193 updates all outputs simultaneously on the clock edge, ensuring glitch-free operation and precise timing.
It features separate Up and Down clock inputs, along with parallel load capability, allowing preloading of any 4-bit binary value using the preset inputs. It also includes carry and borrow outputs for cascading multiple counters. The device supports a wide operating voltage range and is pin-compatible with TTL logic families, making it versatile in mixed-signal systems.
Key Features
Synchronous counting on both up and down edges
Separate Up and Down Clock Inputs
Parallel Load Capability for Preloading Count
Carry and Borrow Outputs for cascading
TTL-compatible inputs and outputs
Wide supply voltage range: 3V to 15V
DIP-16 package for easy PCB integration
Product Specifications
| Specification | Value |
|---|---|
| Professional Name | CD40193BE |
| Function | 4-bit Binary Up/Down Counter |
| Logic Family | CMOS |
| Counter Type | Synchronous |
| Input Clock Signals | Up Clock (CPU), Down Clock (CPD) |
| Preset Inputs | Yes (P0–P3) |
| Supply Voltage Range | 3V to 15V |
| Output Type | Buffered CMOS |
| Propagation Delay | ~200 ns @ 10V |
| Package | DIP-16 ‘ |
| Operating Temp Range | -55°C to +125°C |
Pin Configuration (DIP-16)
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | CPD | Clock Pulse Down (Down Count Input) |
| 2 | CPU | Clock Pulse Up (Up Count Input) |
| 3 | P0 | Parallel Data Input Bit 0 |
| 4 | P1 | Parallel Data Input Bit 1 |
| 5 | P2 | Parallel Data Input Bit 2 |
| 6 | P3 | Parallel Data Input Bit 3 |
| 7 | PE | Parallel Enable (active low) |
| 8 | GND | Ground |
| 9 | Q3 | Output Bit 3 (MSB) |
| 10 | Q2 | Output Bit 2 |
| 11 | Q1 | Output Bit 1 |
| 12 | Q0 | Output Bit 0 (LSB) |
| 13 | TCUP | Terminal Count Up (Carry Output) |
| 14 | TCDOWN | Terminal Count Down (Borrow Output) |
| 15 | CET | Count Enable T (active high) |
| 16 | VDD | Supply Voltage |
Applications
Digital counters and frequency dividers
Event counters (up/down)
Position encoders
Timers and sequencing circuits
Clock division in digital logic systems
Learning and training kits for digital electronics
