8-Bit Universal Schmitt-Trigger Buffer : TC74VHC9541P/FT/FK
Digital equipment incorporates standard logic devices such as bus buffers for interfaces to square signal waveforms.
The TC74VHC9541P/FT/FK 8-bit bus buffers are configurable for inverting or non-inverting output via the CONT input to be functionally equivalent to the TC74xxx540 or TC74xxx541 (74HC/AC/VHC/F/ALS/LS, etc.).
All inputs are Schmitt-trigger inputs making the TC74VHC9541P/FT/FK suitable to be used as an interface between systems with long transmission lines, and also as an bus interface for slowly changing input signals.
Features
- Selectable configuration from output inverting and non-inverting via the CONT input
- The TC74VHC9541P/FT/FK are pin-compatible with the TC74xxx540 and TC74xxx541, thus enabling easy replacement.
- All Schmitt trigger inputs
- Best suited to be used as an interface between systems with long transmission lines, and also as an bus interface for slowly changing input signals.
- Available in through-hole (DIP) and surface-mount (TSSOP) packages, and also in a leaded surface-mount (US) package, which is one of the industry's smallest packages.
- Offered as a family of the TC74VHC Series that are most widely used in the market
- Have the same characteristics as the TC74VHC Series and allow interfacing between 5 V and 3 V logic.
Pin Assignment and Truth Table
Pin Assignment
Truth Table
Main Characteristics
| Characteristics | Symbol | Ratings | |
|---|---|---|---|
| Supply voltage range | Vcc | 2.0V to 5.5V | |
| Input threshold voltage | Positive-going | VP | 3.15V (max) @Vcc=4.5V |
| Negative-going | VN | 1.35V (min) @Vcc=4.5V | |
| Hysteresis voltage | VH | 0.4V to 1.4V @Vcc=4.5V | |
| Output current | IOH/IOL | ±8mA @Ta=25°C, Vcc=4.5V, VOH=3.94V or VOL=0.36V | |
Package
| Part Number | Package |
|---|---|
| TC74VHC9541P | DIP20 |
| TC74VHC9541FT | TSSOP20 |
| TC74VHC9541FK | US20 |