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SN74LS74ADR
+BOMIC FF D-TYPE DUAL 1BIT 14SOIC
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Nhà sản xuấtTexas Dụng cụ
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Ông. Phần #SN74LS74ADR
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74LS |
| ProductStatus | Active |
| Function | Set(Preset) and Reset |
| Type | D-Type |
| OutputType | Complementary |
| NumberofElements | 2 |
| NumberofBitsperElement | 1 |
| ClockFrequency | 33 MHz |
| MaxPropagationDelay@VMaxCL | 40ns @ 5V, 15pF |
| TriggerType | Positive Edge |
| Current-OutputHighLow | 400µA, 8mA |
| Voltage-Supply | 4.75V ~ 5.25V |
| Current-Quiescent(Iq) | 8 mA |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| SupplierDevicePackage | 14-SOIC |
Tổng quan
Description
Key features include:
- Edge-Triggered Operation: The device captures input data on the rising edge of the clock pulse.
- Asynchronous PRE and CLR: Independent preset and clear functions can set or reset the flip-flop immediately, regardless of the clock.
- Complementary Outputs: Each flip-flop provides both Q and Q̅ outputs.
- TTL-Compatible: Designed to interface with TTL (Transistor-Transistor Logic) circuits.
The SN74LS74ADR is typically used in applications that require data storage, data transfer, and state machine designs. Its robust operation and reliability make it suitable for various digital systems, including computers, communication devices, and automation systems.
Equivalent
Features
1. Logic Family: Belongs to the 74LS series, known for low-power Schottky TTL logic.
2. Supply Voltage: Operates typically at a 5V supply.
3. Inputs and Outputs: Equipped with two D-type flip-flops, each with individual D (data), CLK (clock), PR (preset), and CLR (clear) inputs.
4. Output Types: Provides complementary Q and Q' (not Q) outputs.
5. Edge-Triggered: Triggers on the positive edge of the clock signal.
6. Asynchronous Controls: Preset and clear functions are asynchronous, allowing immediate operation independent of the clock.
7. Package: Available in SOIC-14 (14-pin) surface-mount package.
8. Temperature Range: Typically operates within the commercial temperature range of 0°C to 70°C.
The SN74LS74ADR is suitable for a variety of applications in digital systems where flip-flops are required for data storage, data transfer, and sequencing operations.
Pinout
- Pin Count: It has 14 pins.
- Functions:
- VCC (Pin 14): Power supply.
- GND (Pin 7): Ground.
- Each flip-flop has the following pins:
- Data (D): Data input.
- Clock (CLK): Triggers the flip-flop on the rising edge.
- Clear (CLR): Resets the flip-flop, active low.
- Preset (PRE): Sets the flip-flop, active low.
- Q: Normal output.
- Q': Inverted output.
It includes two identical, independent flip-flops with complementary outputs (Q and Q' are always opposite). The output states respond to the data inputs at the rising edge of the clock pulse if the preset and clear inputs are inactive. The clear and preset inputs are asynchronous and override the clock and data inputs when activated.