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54LS374
SN54/74LS373 SN54/74LS374 OCTAL TRANSPARENT LATCH WITH 3-STATE OUTPUTS; OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUT OCTAL TRANSPARENT LATCH WITH 3-STATE OUTPUTS; OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUT The SN54 / 74LS373 consists of eight latches with 3-state outputs for bus organized system applications. The flip-flops appear transparent to the data (data changes asynchronously) when Latch Enable (LE) is HIGH. When LE is LOW, the data that meets the setup times is latched. Data appears on the bus when the Output Enable (OE) is LOW. When OE is HIGH the bus output is in the high impedance state. The SN54 / 74LS374 is a high-speed, low-power Octal D-type Flip-Flop featuring separate D-type inputs for each flip-flop and 3-state outputs for bus oriented applications. A buffered Clock (CP) and Output Enable (OE) is common to all flip-flops. The SN54 / 74LS374 is manufactured using advanced Low Power Schottky technology and is compatible with all Motorola TTL families. • • • • • • • LOW POWER SCHOTTKY 20 1 Eight Latches in a Single Package 3-State Outputs for Bus Interfacing Hysteresis on Latch Enable Edge-Triggered D-Type Inputs Buffered Positive Edge-Triggered Clock Hysteresis on Clock Input to Improve Noise Margin Input Clamp Diodes Limit High Speed Termination Effects PIN NAMES J SUFFIX CERAMIC CASE 732-03 N SUFFIX PLASTIC CASE 738-03 20 1 DW SUFFIX SOIC CASE 751D-03 LOADING (Note a) 20 HIGH 0.5 U.L. 0.5 U.L. 0.5 U.L. 0.5 U.L. 65 (25) U.L. Data Inputs Latch Enable (Active HIGH) Input Clock (Active HIGH going edge) Input Output Enable (Active LOW) Input Outputs (Note b) D0 – D7 LE CP OE O0 – O7 LOW 1 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 15 (7.5) U.L. ORDERING INFORMATION SN54LSXXXJ Ceramic SN74LSXXXN Plastic SN74LSXXXDW SOIC NOTES: a) 1 TTL Units Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 7.5 U.L. for Military (54) and 25 U.L. for Commercial (74) Temperature Ranges. The Output HIGH drive factor is 25 U.L. for Military (54) and 65 U.L. for Commercial (74) Temperature Ranges. CONNECTION DIAGRAM DIP (TOP VIEW) SN54 / 74LS374 SN54 / 74LS373 VCC O7 D7 D6 O6 O5 D5 D4 O4 LE VCC O7 D7 D6 O6 O5 D5 D4 O4 CP 20 19 18 17 16 15 14 13 12 11 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 OE O0 D0 D1 O1 O2 D2 D3 O3 GND NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 2 3 4 5 6 7 8 9 10 OE O0 D0 D1 O1 O2 D2 D3 O3 GND FAST AND LS TTL DATA 5-521
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。
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