74195 High-Speed 4-Bit Parallel Access Shift Register DIP-16
The 74195 4-Bit Parallel-Access Shift Register is a high-speed TTL logic device designed for both serial and parallel data operations. It allows shifting data in either direction and features parallel loading for flexible data manipulation. The IC supports synchronous operation, enabling fast and reliable data transfer in digital systems. With its 16-pin DIP package, the 74195 is ideal for use in counters, registers, data storage, and timing circuits in computers and control systems.
Features
- 4-bit universal shift register with parallel and serial inputs.
- Supports both left and right shift operations.
- Parallel loading capability for flexible data handling.
- Synchronous operation with a single clock input.
- TTL-compatible logic levels for easy interfacing.
- High-speed performance for digital and control applications.
- Clear (reset) input for register initialization.
- Compact 16-pin DIP package for through-hole mounting.
- Suitable for cascading to expand data width.
Pinout Configuration
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | MR | Master Reset (Active HIGH) |
| 2 | J | J Input for JK Flip-Flop |
| 3 | K | K Input for JK Flip-Flop |
| 4 | D0 | Parallel Data Input Bit 0 (LSB) |
| 5 | D1 | Parallel Data Input Bit 1 |
| 6 | D2 | Parallel Data Input Bit 2 |
| 7 | D3 | Parallel Data Input Bit 3 (MSB) |
| 8 | GND | Ground (0V) |
| 9 | PE | Parallel Enable / Load Enable Input |
| 10 | CP | Clock Pulse Input |
| 11 | Q̅3 | Complementary Output of Q3 |
| 12 | Q3 | Output Bit 3 (MSB) |
| 13 | Q2 | Output Bit 2 |
| 14 | Q1 | Output Bit 1 |
| 15 | Q0 | Output Bit 0 (LSB) |
| 16 | VCC | Positive Supply Voltage (+5V) |
Specifications
| Parameter | Description |
| IC Type | 4-Bit Universal Shift Register |
| Logic Family | TTL |
| Datasheet | 74195 |
| Number of Bits | 4-Bit |
| Operating Voltage (Vcc) | 4.75V – 5.25V |
| Input High Voltage (VIH) (min) | 2.0V |
| Input Low Voltage (VIL) (max) | 0.8V |
| Output High Voltage (VOH) (min) | 2.7V |
| Output Low Voltage (VOL) (max) | 0.4V |
| Propagation Delay | 25 nsec |
| Maximum Clock Frequency | 25 MHz |
| Operating Temperature Range | 0°C to +70°C |
| Package Type | DIP-16 |
| Mounting Type | Through Hole |
| Inputs | Parallel and Serial Inputs |
| Outputs | Parallel and Serial Outputs |
| Clear (Reset) Input | Active Low |
Dimensions
Applications
- Data storage and transfer circuits.
- Serial-to-parallel and parallel-to-serial data conversion.
- Digital counters and timers.
- Shift and control registers in microprocessor systems.
- Data buffering and synchronization in digital logic circuits.
- LED or display sequencing systems.
- Communication and control interface circuits.
Package Contents
- 1 x 74195 High-Speed 4-Bit Parallel Access Shift Register DIP-16
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