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SN74LS74AN
+Lista de MateriaisIC FF D-TYPE DOUBLE 1BIT 14PDIP
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FabricanteTexas Instruments
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Peça do Fabricante #SN74LS74AN
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Ficha Técnica SN74LS74AN DataSheet
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Especificações
| Atributo | Valor |
| Series | 74LS |
| Part Status | Active |
| Function | Set(Preset) and Reset |
| Type | D-Type |
| Output Type | Complementary |
| Number of Elements | 2 |
| Number of Bits per Element | 1 |
| Clock Frequency | 33 MHz |
| Max Propagation Delay @ V, Max CL | 25ns @ 2.5V, 15pF |
| Trigger Type | Positive Edge |
| Current - Output High, Low | 400µA, 8mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Current - Quiescent (Iq) | 8 mA |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
| Supplier Device Package | 14-PDIP |
| Package / Case | 14-DIP (0.300", 7.62mm) |
| Base Product Number | 74LS74 |
Visão Geral
Description
With a supply voltage range of 4.75V to 5.25V, this IC operates reliably in TTL-compatible systems. It is characterized by low power consumption and high switching speed. The positive edge-triggered nature means that the flip-flop changes state on the rising edge of the clock signal, capturing the input data at precisely this transition.
The SN74LS74AN is commonly used in applications such as data storage, shift registers, and frequency division, making it a versatile component in digital design. The device comes in a standard dual in-line package (DIP) for easy integration into various electronic projects.
Equivalent
1. NXP's 74LS74N
2. ON Semiconductor's MC74LS74AN
3. Fairchild/ON Semiconductor's 74F74
4. STMicroelectronics' M74HC74
5. Toshiba's TC74LS74AP
These chips have similar functionality and pin configurations, generally used in digital circuits for data storage and transfer applications. Always check datasheets for specific electrical characteristics and compatibility.
Features
1. Logic Type: TTL (Transistor-Transistor Logic) with bipolar technology.
2. Operation: Consists of two independent flip-flops, each with data (D), clock (CLK), preset (PRE), and clear (CLR) inputs.
3. Output: Offers both Q and Q' (complementary) outputs.
4. Edge-Triggered: Operates on the positive edge of the clock pulse.
5. Preset and Clear: Asynchronous active-low inputs for setting or resetting the flip-flops.
6. Voltage Supply: Operates typically at 5V.
7. High-Speed: Provides fast switching capabilities suitable for high-speed applications.
8. Power Dissipation: Low power consumption characteristic of the LS series.
9. Package Type: Available in a 14-pin dual in-line package (DIP).
10. Fan-Out: Can drive up to 10 standard TTL loads.
These features make the SN74LS74AN suitable for a wide range of applications in digital circuits, including data storage, data transfer, and synchronization tasks.
Pinout
1. Vcc (Pin 14): Power supply.
2. GND (Pin 7): Ground.
3. Preset (PRE, Pins 4 and 10): Asynchronously sets the output high.
4. Clear (CLR, Pins 1 and 13): Asynchronously resets the output low.
5. Clock (CLK, Pins 3 and 11): Triggered on the rising edge to transfer data from D to Q.
6. Data Input (D, Pins 2 and 12): Data input for the flip-flop.
7. Q Outputs (Q, Pins 5 and 9): True outputs of the flip-flops.
8. Q̅ Outputs (Q̅, Pins 6 and 8): Complementary outputs of the flip-flops.
Each flip-flop is independently controlled, allowing versatile uses in digital circuits for data storage, transfer, and synchronization tasks.