General-Purpose Logic IC TC74VHC Series: TC74VHCV373FT/FK, TC74VHCV374FT/FK, TC74VHCV573FT/FK, TC74VHCV574FT/FK
The TC74VHC line includes a total of 84 products, including the TC74VHC, TC74VHCT, and TC74VHC9xxx series. In conjunction with the expansion of the TC74VHCV series, we have added a lineup of four products featuring a latch/flip-flop function (TC74VHCV373, TC74VHCV374, TC74VHCV573, and TC74VHCV574).
Features
- Interface between different power supplies can be easily realized with the power down protection function in both the input and output sections.
- Stable operation can be achieved with the Schmitt trigger function in each input pin.
- Large fan-out characteristic at 16 mA output current.
- Since the minimum operating power supply voltage is guaranteed at 1.8 V, it is possible to design boards with margins.
- The footprint of the US package has been reduced to 50% of that of the TSSOP package.
| TC74VHC family | ||||
|---|---|---|---|---|
| TC74VHC | TC74VHCTxxxA series (TTL input series) |
TC74VHC9xxx series (9 - series) |
TC74VHCVxxx series (V - series) |
|
| Powerdown Protection | IN only | IN and OUT | IN only | 1: IN and OUT |
| Schmitt-Trigger Inputs | TC74VHC14/132 only | TC74VHCT14A only | All parts | 2: All parts |
| Output Current (@5V) | 8mA (Min) | 8mA (Min) | 8mA (Min) | 3: 16mA (Min) |
| Supply Voltage Range | 2.0V to 5.5V | 4.5V to 5.5V | 2.0V to 5.5V | 4: 1.8V to 5.5V |
| Pin Configuration | Compatible with 74series |
Compatible with 74series |
Original | Compatible with 74series |
| Competitor's Counterpart | 74AHC/(LV) | 74AHCT | non | 74AHC/LV |
| Package Offerings | SOP/TSSOP/US | SOP/TSSOP/US | DIP/TSSOP/US | TSSOP/US |
| Part Count | 54 | 21 | 10 | 13 |
- An input/output power down protection function has been added
Since these products feature a built-in input/output tolerant circuit, unnecessary current from the main board to the sub board will not be caused even in the event power on the sub board is down.
- A Schmitt trigger input is built in
Since these products feature the Schmitt function, a longer rising and falling time of input signals will not have an effect on output.
- 16mA output current current, IOH, IOL, (Min @4.5 V), compared to 8 mA of other versions
Provides twice as great fanout capability as other versions of the TC74VHC Series. - Minimum operating voltage as low as 1.8V
Provides greater design margins.
Uses
- Signal control and other functions around the IC
Outline Drawing
Main Specifications
| Parameter | Symbol | Value | Condition | |
|---|---|---|---|---|
| Threshold voltage |
Positive-going | VP | 3.15V (Max) | VCC=4.5V |
| Negative-going | VN | 1.35V (Min) | VCC=4.5V | |
| Hysteresis voltage | VH | 0.4 to 1.4V | VCC=4.5V | |
| Input transition rise or fall time | dt/dv | 0 to 1 ms/V | VCC=4.5 to 5.5V | |
Lineup
| Part Number | Function | Package |
|---|---|---|
| TC74VHCV05FT TC74VHCV05FK |
Hex Schmitt Inverter (Open Drain) | TSSOP14 US14 |
| TC74VHCV07FT TC74VHCV07FK |
Hex Schmitt Buffer (Open Drain) | TSSOP14 US14 |
| TC74VHCV14FT TC74VHCV14FK |
Hex Schmitt Inverter | TSSOP14 US14 |
| TC74VHCV17FT TC74VHCV17FK |
Hex Schmitt Buffer | TSSOP14 US14 |
| TC74VHCV240FT TC74VHCV240FK |
Octal Bus Buffer (3-state,inverted) | TSSOP20 US20 |
| TC74VHCV244FT TC74VHCV244FK |
Octal Bus Buffer (3-state,) | TSSOP20 US20 |
| TC74VHCV245FT TC74VHCV245FK |
Octal Bus Transceiver (3-state) | TSSOP20 US20 |
| TC74VHCV540FT TC74VHCV540FK |
Octal Bus Buffer (3-state,inverted) | TSSOP20 US20 |
| TC74VHCV541FT TC74VHCV541FK |
Octal Bus Buffer (3-state) | TSSOP20 US20 |
| TC74VHCV373FT (*1) TC74VHCV373FK (*1) |
Octal Schmitt D-Type Latch with 3-State Output | TSSOP20 US20 |
| TC74VHCV374FT (*1) TC74VHCV374FK (*1) |
Octal Schmitt D-Type Flip Flop with 3-State Output | TSSOP20 US20 |
| TC74VHCV573FT (*1) TC74VHCV573FK (*1) |
Octal Schmitt D-Type Latch with 3-State Output | TSSOP20 US20 |
| TC74VHCV574FT (*1) TC74VHCV574FK (*1) |
Octal Schmitt D-Type Flip Flop with 3-State Output | TSSOP20 US20 |
- *1: New Product