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引腳位 符號 名稱及功能 4,1,13,10 1? 2? 3?4? 和輸出端 5, 3,14,12 A1, A2, A3, A4 運算輸入端 6, 2,15,11 B1, B2, B3, B4 運算輸入端 7 C0 進位輸入端 9 C4 進位輸出端 8 GND 接地( 0V) 16 Vcc 正電壓 電源 4bit 超前進位加法器的全定制設計 3 推薦工作條件 表 22 SMIC 電特性 表 231 直流工作規(guī)格 Symbol Parameter Conditions Min Typ (Note 1) Max Units VI Input clamp voltage CCV =Min I =18mA V OHV High Lever Output Voltage ,CC OHV Min I Max?? ,IL IHV Max V Min?? DM54 V DM74 OLV Low Lever Output Voltage ,CC OLV Min I Max?? ,IL IHV Max V Min?? DM54 V DM74 4,OL CCI mA V Min?? DM74 I Input current@Max input voltage CCV Max? 7iVV? A B mA CO IHI High Lever Input Current CCV Max? ? A B 40 uA CO 20 福州大學數(shù)字集成電路課程設計(報告) 4 ILI Low Lever Input Current CCV Max? ? A B mA CO OSI Short circuit output CCV Max? (Note 2) DN54 100 mA DM74 100 1CCI Supply current CCV Max? (Note 3) 19 34 mA 2CCI Supply current CCV Max? (Note 4) 22 39 mA 表 232 交流特性 Symbol Parameter From(Input) To(Output) 2L KR ?? Units 15LC pF? 50LC pF? Min Max Min Max PLHt Propagation Delay Time Low to High Lever Output CO to 1? , 2? 10 11 ns PHLt Propagation Delay Time High to Low Lever Output CO to 1? , 2? 10 12 ns PLHt Propagation Delay Time Low to High Lever Output CO to 3? 10 11 ns 4bit 超前進位加法器的全定制設計 5 PHLt Propagation Delay Time High to Low Lever Output CO to 3? 10 12 ns PLHt Propagation Delay Time Low to High Lever Output CO to 4? 10 11 ns PHLt Propagation Delay Time High to Low Lever Output CO to 4? 10 12 ns PLHt Propagation Delay Time Low to High Lever Output iiorBA to i? 10 11 ns PHLt Propagation Delay Time High to Low Lever Output iiorBA to i? 10 12 ns PLHt Propagation Delay Time Low to High Lever Output CO to C4 8 10 ns PHLt Propagation Delay Time High to Low Lever Output CO to C4 8 11 ns PLHt Propagation Delay Time Low to High Lever Output iiorBA to C4 8 10 ns PHLt Propagation Delay Time High to Low Lever Output iiorBA to C4 8 11 ns 福州大學