HOME＞在庫検索＞在庫情報
74LS12
SN54/74LS122 SN54/74LS123 RETRIGGERABLE MONOSTABLE MULTIVIBRATORS These dc triggered multivibrators feature pulse width control by three methods. The basic pulse width is programmed by selection of external resistance and capacitance values. The LS122 has an internal timing resistor that allows the circuits to be used with only an external capacitor. Once triggered, the basic pulse width may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. • • • • • RETRIGGERABLE MONOSTABLE MULTIVIBRATORS LOW POWER SCHOTTKY Overriding Clear Terminates Output Pulse Compensated for VCC and Temperature Variations DC Triggered from Active-High or Active-Low Gated Logic Inputs Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle Internal Timing Resistors on LS122 J SUFFIX CERAMIC CASE 620-09 16 1 SN54 / 74LS123 (TOP VIEW) (SEE NOTES 1 THRU 4) 1 Rext/ 1 VCC Cext Cext 16 15 14 1Q 2Q 2 CLR 13 12 11 CLR Q 2 1B 3 1 CLR 2A 10 9 16 1 CLR Q Q 1 1A 2B 16 Q 4 1Q 5 2Q 1 6 2 Cext 8 7 2 GND Rext/ Cext Rext/ Cext NC 13 12 Cext 11 NC Rint 9 10 D SUFFIX SOIC CASE 751B-03 J SUFFIX CERAMIC CASE 632-08 14 SN54 / 74LS122 (TOP VIEW) (SEE NOTES 1 THRU 4) VCC 14 N SUFFIX PLASTIC CASE 648-08 1 Q N SUFFIX PLASTIC CASE 646-06 8 Rint Q 14 1 CLR Q 1 A1 2 A2 3 B1 4 B2 5 CLR 6 Q 7 GND 14 1 D SUFFIX SOIC CASE 751A-02 NC — NO INTERNAL CONNECTION. NOTES: 1. An external timing capacitor may be connected between Cext and Rext/Cext (positive). 2. To use the internal timing resistor of the LS122, connect Rint to VCC. 3. For improved pulse width accuracy connect an external resistor between Rext/Cext and VCC with Rint open-circuited. 4. To obtain variable pulse widths, connect an external variable resistance between Rint/Cext and VCC. FAST AND LS TTL DATA 5-1 ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC
MOT
1999年8月4日、ディスクリート・標準アナログ・標準ロジックなどの半導体部門をオン・セミコンダクターとして分社化した。これは、イリジウムコミュニケーションズ倒産の損失をカバーするために分社化された。
ON Semiconductor
U.S.A
オン・セミコンダクターの前身は、モトローラ社の半導体コンポーネント・グループであり、モトローラ社のディスクリート、標準アナログ、標準ロジック・デバイスを継続して製造。
見積依頼→在庫確認→見積回答→注文→検収→支払 となります。
