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| Part Number | PT8A977BPE | PT8A978BPE | PT8A977BWE | 
|---|---|---|---|
| Manufacturer | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | 
| Product Status | Obsolete | Obsolete | Obsolete | 
| Motor Type - Stepper | - | - | - | 
| Motor Type - AC, DC | - | - | - | 
| Function | Controller - Commutation, Direction Management | Controller - Commutation, Direction Management | Controller - Commutation, Direction Management | 
| Output Configuration | - | - | - | 
| Interface | - | - | - | 
| Technology | - | - | - | 
| Step Resolution | - | - | - | 
| Applications | - | - | - | 
| Current - Output | - | - | - | 
| Voltage - Supply | 1.8V ~ 5V | 2.5V ~ 5V | 1.8V ~ 5V | 
| Voltage - Load | - | - | - | 
| Operating Temperature | -10°C ~ 40°C (TA) | -10°C ~ 40°C (TA) | -10°C ~ 40°C (TA) | 
| Mounting Type | Through Hole | Through Hole | Surface Mount | 
| Package / Case | 14-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 14-DIP | 16-PDIP | 14-SOIC |