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74HCT259D
+BOMLatches 8-BIT ADDRSSBL LATCH
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ManufacturerNexperia
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Mfr. Part #74HCT259D
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In Stock23480
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Specifications
| Attribute | Value |
| StandardPackQty | 50 |
Overview
Description
Key characteristics of the 74HCT259D include its ability to directly interface with TTL devices due to its compatible input thresholds. It operates in a supply voltage range of 4.5V to 5.5V and is designed for high-speed operation, making it suitable for various digital storage and sequencing tasks. The device comes in a standard SOIC package, which supports easy integration into PCB designs. It is commonly employed in applications such as data distribution, demultiplexing, and memory address decoding.
Equivalent
Features
1. High-Speed CMOS: It combines low power consumption with high speed.
2. Addressable Latches: It includes 8 latches that can be individually addressed through a 3-bit address.
3. Data Storage and Retrieval: The device can store and retrieve data via a common data input/output pin.
4. Latch Enable: A latch enable pin controls the latching operation, allowing data to be stored when active.
5. Reset Function: A master reset function is available to clear all latches simultaneously.
6. Wide Operating Voltage: It operates over a wide supply voltage range, typically 4.5 V to 5.5 V.
7. Low Power Consumption: The device is designed to minimize power use.
8. Compatibility: It is TTL-compatible, ensuring compatibility with other logic devices.
9. Compact Package: Typically available in small-outline packages like SOIC and TSSOP for space-efficient designs.
Overall, the 74HCT259D is suitable for applications requiring efficient data latching and selection.
Pinout
The 74HCT259D comes in a 16-pin dual in-line package (DIP) or small-outline integrated circuit (SOIC) package. The pin configuration is as follows:
1. VCC: Power supply pin.
2. GND: Ground pin.
3. D: Data input.
4. LE: Latch enable input.
5. CLR: Clear input (active low).
6. Q0-Q7: Outputs for each of the eight latches.
7. A0-A2: Address inputs to select which latch to write to.
8. E: Enable input.
The primary function of the 74HCT259D is to latch data from the input pin (D) into one of the eight outputs (Q0-Q7), based on the address inputs (A0-A2). The latch is enabled by the latch enable input (LE), and the outputs can be cleared using the CLR pin. This makes it useful in applications that require data storage and selection, such as memory addressing or simple data routing tasks.