HOME＞在庫検索＞在庫情報
74S181N
DM74S181 Arithmetic Logic Unit Function Generators General Description Features These arithmetic logic units (ALU) function generators perform 16 binary arithmetic operations on two 4-bit words as shown in Tables 1 and 2 These operations are selected by the four function-select lines (S0 S1 S2 S3) and include addition subtraction decrement and straight transfer When performing arithmetic manipulations the internal carries must be enabled by applying a low-level voltage to the mode control input (M) A full carry look-ahead scheme is available in these devices for fast simultaneous carry generation by means of two cascade-outputs (P and G) for the four bits in the package When used in conjunction with the DM74S182 full carry look-ahead circuits high-speed arithmetic operations can be performed The typical addition times shown below illustrate how little time is required for addition of longer words when full carry look-ahead is employed The method of cascading 182 circuits with these ALU’s to provide multi-level full carry look-ahead is illustrated under typical applications data for the DM74S182 (Continued) Y Connection Diagram Pin Designations Dual-In-Line Package Y Y Arithmetic operating modes Addition Subtraction Shift operand A one position Magnitude comparison Plus twelve other arithmetic operations Logic function modes EXCLUSIVE-OR Comparator AND NAND OR NOR Plus ten other logic operations Full look-ahead for high-speed operations on long words Designation Word B Inputs 3 4 5 6 Function-Select Inputs 7 Inv Carry Input M 8 Mode Control Input F3 F2 F1 F0 13 11 10 9 Function Outputs AeB 14 Comparator Output P 15 Carry Propagate Output Cn a 4 16 Inv Carry Output G TL F 6473 18 20 22 1 Cn C1995 National Semiconductor Corporation Word A Inputs S3 S2 S1 S0 TL F 6473 – 1 Function 19 21 23 2 B3 B2 B1 B0 Order Number DM74S181N See NS Package Number N24A Pin Nos A3 A2 A1 A0 17 Carry Generate Output VCC 24 Supply Voltage GND 12 Ground RRD-B30M105 Printed in U S A DM74S181 Arithmetic Logic Unit Function Generators February 1992
TI
Texas Instruments Incorporated
U.S.A
世界25ヶ国以上に製造・販売拠点を有する国際的な半導体企業であり、デジタル情報家電、ワイヤレス、ブロードバンド市場に欠かせないデジタル信号処理を行うDSPと、それに関連するアナログIC、マイクロコントローラを主力製品としている。
お買い上げ小計が１万円以上の場合は送料はサービスさせて頂きます。１万円未満の場合、また時間指定便はお客様負担となります。（送料は地域により異なります。）
