Features
- Enhanced N-channel FET with no inherent diode to VCC
- 5Ω bidirectional switches connect inputs to outputs
- Zero propagation delay, zero ground bounce
- Undershoot clamp diodes on all switch and control inputs
- Available in 20-pin QSOP, SOIC, and TSSOP packages
Description
The QS3244 provides a set of eight high-speed CMOS TTL-compatible bus switches in a pinout compatible with 74FCT244, 74F244, 74ALS/AS/LS244 8-bit drivers. The low ON-resistance (5Ω) of the QS3244 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The QS3244 operates at -40 °C to +85 °C.
Parameters
| Attributes | Value |
|---|---|
| Function | 244 Switch |
| Pkg. Code | PCG20 |
| Temp. Range (°C) | -40 to 85°C |
| Bus Width (bits) | 8 |
| Core Voltage (V) | 5 |
| On Resistance (Ω) | 5 |
| Speed Grade | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QSOP | 8.7 x 3.8 x 1.47 | 20 | 0.64 |
Applications
- Hot-swapping, hot-docking
- Voltage translation (5V to 3.3V)
- Power conservation
- Capacitance reduction and isolation
- Logic replacement (data processing)
- Clock gating
- Bus switching and isolation
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