| Part Number | LM231AN | LM331AN | 
|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | 
| Category | PMIC - V/F and F/V Converters | PMIC - V/F and F/V Converters | 
|   |   | |
| Product Status | Active | Obsolete | 
| Type | Voltage to Frequency | Voltage to Frequency | 
| Frequency - Max | 100 kHz | 100 kHz | 
| Full Scale | ±50ppm/°C | ±50ppm/°C | 
| Linearity | ±0.01% | ±0.01% | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 8-PDIP | 8-PDIP |