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AM25LS2569DC
Advanced Micro Devices
IC BINARY COUNTER 4-BIT 20CDIP
1383 Pcs New Original In Stock
Counter IC Binary Counter 1 Element 4 Bit Positive Edge 20-CDIP
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5.0 / 5.0
- (85 Ratings)
AM25LS2569DC
Product Overview
11719369
DiGi Electronics Part Number
AM25LS2569DC-DGManufacturer
Advanced Micro Devices
AM25LS2569DC
Description
IC BINARY COUNTER 4-BIT 20CDIPInventory
1383 Pcs New Original In Stock
Counter IC Binary Counter 1 Element 4 Bit Positive Edge 20-CDIP
Quantity
Minimum 1
Minimum 1
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AM25LS2569DC Technical Specifications
Category
Logic, Counters, Dividers
Packaging
-
Series
-
Product Status
Active
Logic Type
Binary Counter
Direction
Up, Down
Number of Elements
1
Number of Bits per Element
4
Reset
Asynchronous
Timing
Synchronous
Count Rate
20 MHz
Trigger Type
Positive Edge
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
20-CDIP (0.300", 7.62mm)
Supplier Device Package
20-CDIP
Base Product Number
25LS2569
Datasheet & Documents
HTML Datasheet
AM25LS2569DC-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
Vendor Undefined
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-AM25LS2569DC
AMDAMDAM25LS2569DC
Standard Package
52
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Knowing their prices are clear and straightforward reassures me as a business owner.
December 02, 2025
Their products are not only budget-friendly but also incredibly dependable over time.
December 02, 2025
The packaging was well-designed, making sure the item was well-protected during delivery.
December 02, 2025
DiGi Electronics makes electronics shopping both affordable and straightforward with their well-designed website.
December 02, 2025
Their support team is attentive and committed to solving any issues efficiently.
December 02, 2025
Shipments are consistently on schedule, reflecting their commitment to reliability.
December 02, 2025
My orders were dispatched quickly, and the logistics team ensured a smooth delivery experience.
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Frequently Asked Questions (FAQ)
Can the AM25LS2569DC be safely used as a drop-in replacement for the 74LS193 in a 5V up/down counter application, and what are the critical timing and logic-level compatibility risks?
The AM25LS2569DC is functionally similar to the 74LS193 as a 4-bit synchronous up/down binary counter with asynchronous reset, but it is not a guaranteed drop-in replacement due to subtle differences in propagation delay, setup/hold times, and output drive characteristics. While both operate at 5V (4.75–5.25V for AM25LS2569DC), the AM25LS2569DC has a maximum count rate of 20 MHz, which may be lower than some 74LS193 variants rated up to 30 MHz. Additionally, the AM25LS2569DC uses a 20-CDIP package with slightly different pin spacing and thermal profile. Before substitution, verify timing margins in your clock domain and ensure downstream logic can tolerate the AM25LS2569DC’s tPHL/tPLH specs. Always validate in-circuit under worst-case temperature (0°C to 70°C) and voltage conditions to avoid intermittent counting errors.
What are the key reliability concerns when designing a high-cycle industrial control system using the AM25LS2569DC, especially regarding its MSL 3 rating and through-hole mounting in vibration-prone environments?
The AM25LS2569DC carries an MSL 3 (168-hour floor life) rating, meaning it is susceptible to moisture absorption if exposed to ambient humidity before soldering—improper handling can lead to popcorning or latent reliability issues during reflow simulation (even in through-hole processes with preheating). More critically, its 20-CDIP through-hole package, while robust electrically, presents mechanical reliability risks in high-vibration applications common in industrial settings. Solder joints may fatigue over time, leading to intermittent connections. To mitigate, use strain relief on leads, conformal coating, and consider potting the assembly. Also, ensure PCB mounting includes support near the IC to reduce lever-arm stress on leads during thermal cycling or mechanical shock.
How does the asynchronous reset behavior of the AM25LS2569DC impact system initialization in multi-clock domain designs, and what design practices prevent unintended glitches during power-up?
The AM25LS2569DC features an asynchronous reset that takes effect immediately when asserted, regardless of the clock state. In multi-clock or distributed clock systems, this can cause metastability or partial reset conditions if the reset signal is not properly synchronized or if power sequencing causes the reset line to float during startup. To avoid erratic counting states, implement a power-on reset (POR) circuit with a clean, delayed release that ensures VCC is stable (>4.75V) before deasserting reset. Additionally, tie unused inputs (e.g., parallel load) to valid logic levels via pull-ups or pull-downs. A 100nF decoupling capacitor placed within 5mm of the VCC pin minimizes supply bounce that could falsely trigger reset during transients.
Is the AM25LS2569DC suitable for replacing older AMD Am2971-based counter designs, and what architectural differences must be addressed in the interface logic?
The AM25LS2569DC can replace the Am2971 in many 4-bit counter applications, but critical architectural differences exist: the Am2971 is a ripple counter with individual clocking per stage, while the AM25LS2569DC is a synchronous counter with a single clock input and internal gating for up/down control. This means the AM25LS2569DC offers faster, glitch-free outputs but requires a cleaner clock signal and proper management of the UP/DOWN and ENABLE inputs. Legacy designs relying on the Am2971’s ripple delay for timing generation will fail with the AM25LS2569DC due to its synchronous nature. Re-engineer the control logic to use the AM25LS2569DC’s parallel load and carry-out features for modulus control, and verify that clock skew and fanout do not exceed the 20 MHz limit under full load.
What are the long-term supply and compliance risks of specifying the AM25LS2569DC in new greenfield designs, given its non-RoHS status and AMD’s current market position in logic ICs?
Specifying the AM25LS2569DC in new designs carries significant long-term risks: it is explicitly marked as RoHS non-compliant, which may violate environmental regulations in EU, California, and other jurisdictions, potentially blocking product certification or market access. Additionally, AMD has largely exited the general-purpose logic IC market, meaning the AM25LS2569DC is likely a legacy part with limited future support, second-sourcing options, or lifecycle guarantees. While 1304 units are currently in stock, this inventory may deplete without replacement. For new designs, consider migrating to a RoHS-compliant alternative such as the Texas Instruments SN74LS193N or NXP 74LVC161, which offer similar performance with modern packaging, lower power, and full compliance. If the AM25LS2569DC must be used, secure a lifetime buy and document a qualified replacement path in your BOM risk mitigation plan.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AM25LS2569DC CAD Models
Advanced Micro Devices AM25LS2569DC PCB symbols & footprints
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