CD4508BE

Dual 4-bit Latches
5,316 Effective Inventory

CD4508BE

Effective Inventory5,316

Dual 4-bit Latches

Quality Assurance

Quality Assurance

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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

Shipping & Payment

About Shipping

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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CD4508BE DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Rapid Quote

Please submit RFQ for CD4508BE or email to us: Email: [email protected], we will contact you in 12 hours.

Details

When it comes to digital storage applications, the CD4508BE stands out as a reliable and flexible solution. This dual 4-bit addressable latch features two independent latch circuits with separate data inputs, address inputs, and output control signals, allowing for versatile data storage configurations. Operating over a wide voltage range of 3V to 18V, this product is compatible with various digital system designs. Its high-speed response time ensures quick data storage and retrieval operations, while the latch circuits are designed to reset to a high impedance state when the output control is activated, preventing any unwanted output signals during data input. With its performance and flexibility, the CD4508BE is a great choice for general-purpose storage needs in digital systems

Key Features

  • High-Voltage Types (20-Volt Rating)
  • Two Independent 4-Bit Latches
  • Individual Master Reset for Each 4-Bit Latch
  • 3-State Outputs with High-Impedance State for Bus Line Applications
  • Medium-Speed Operation: tPHL = tPLH = 70nS (Typ.) at VDD = 10V and CL = 50pF
  • 100% Tested for Quiescent Current at 20V
  • 5V, 10V, and 15V Parametric Ratings
  • Standardized, Symmetrical Output Characteristics
  • Maximum Input Current of 1µA at 18V Over Full Package Temperature Range; 100nA at 18V and 25oC
  • Noise Margin (Full Package-Temperature Range):
  • - 1V at VDD = 5V
  • - 2V at VDD = 10V
  • - 2.5V at VDD = 15V
  • Meets all Requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ‘B’ Series CMOS Devices"

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! Latches RoHS Details
Number of Circuits 2 Circuit Logic Type Latch
Logic Family CD408 Polarity Non-Inverting
Quiescent Current ! 100 uA Number of Output Lines 3 Line
High Level Output Current ! - 4.2 mA Low Level Output Current ! 32 mA
Propagation Delay Time 260 ns at 5 V, 140 ns at 10 V, 100 ns at 15 V Supply Voltage - Max 18 V
Supply Voltage - Min 3 V Minimum Operating Temperature - 55 C
Maximum Operating Temperature ! + 125 C Package / Case PDIP-24
Brand Texas Instruments Function Dual 4 bit
Height 4.57 mm Length 31.75 mm
Mounting Style Through Hole Number of Channels 8 Channel
Number of Input Lines 8 Line Operating Supply Voltage ! 3 V to 18 V
Output Type 3-State Product Type ! Latches
Reset Type Master Reset Series CD4508B
Factory Pack Quantity 15 Subcategory Logic ICs
Supply Current - Max 80 nA Type D-Type
Width 13.71 mm Unit Weight 0.131759 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification CD4508BE PDF Download

FAQs

What is CD4508BE?

The CD4508BE is a dual 4-bit latch register designed by Texas Instruments. It is commonly used in digital systems for storage and interface applications, such as address latching in microprocessor systems, parallel-to-serial conversion, and general-purpose storage.

How Does CD4508BE Work?

The CD4508BE works by providing two independent 4-bit latch registers that can store data in a parallel fashion. Each latch can be individually enabled to load data from the inputs, and the stored data can be accessed at the output. The device is designed to operate with standard TTL input levels, making it compatible with a wide range of digital systems.

How Many Pins does CD4508BE have and What are the Functions of the Pinout Configuration?

The CD4508BE is housed in a 16-pin dual in-line package (DIP). The pinout configuration includes:

  • QA, QB, QC, QD: Output pins for the first 4-bit latch.
  • QBA, QBB, QBC, QBD: Output pins for the second 4-bit latch.
  • LE1: Latch enable input for the first latch.
  • LE2: Latch enable input for the second latch.
  • U/D: Up/Down control input for parallel-to-serial operation.
  • CLK: Clock input for parallel loading or serial shifting.
  • clrR: Clear/reset input for both latches.
  • VCC: Positive power supply pin.
  • GND: Ground pin.

What are the Pros and Cons of CD4508BE?

Pros:

  • Dual Latches: Provides two independent 4-bit latch registers in a single package, offering space and cost savings.
  • Easy Interface: Compatible with standard TTL input levels, making it easy to interface with digital systems.
  • Versatile Functionality: Can be used for a variety of storage and interface applications in digital circuits.
  • Simple Control: Includes clear/reset and latch enable inputs for easy control of the latches.

Cons:

  • Limited Data Width: Each latch can only store 4 bits of data, which may be insufficient for some applications requiring larger data storage.
  • Obsolete Technology: As of the date of this response, the CD4508BE is based on older CMOS technology and may not be available in newer designs.

Are There Any Equivalents/Alternatives to CD4508BE for Recommendation?

  • The CD74HCT75E from Texas Instruments is a similar dual 4-bit latch register with updated technology.
  • Alternatives to the CD4508BE include the 74HC573 from NXP Semiconductors and the SN74LS373 from Texas Instruments.

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