- KA4558AI
- Fairchild Semiconductor Corporation
- DUAL OP-AMP, 6000 uV OFFSET-MAX, PDIP8
- KA4558AID
- Fairchild Semiconductor Corporation
- DUAL OP-AMP, 7500 uV OFFSET-MAX, PDSO8
- KA4558AIS
- Fairchild Semiconductor Corporation
- DUAL OP-AMP, 7500 uV OFFSET-MAX, PSIP9