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Analog Devices Inc./Maxim Integrated DS1005M-250
- Part No.:
- DS1005M-250
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1005M-250.pdf
- Description:
- IC DELAY LINE 5TAP 250NS 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:438
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Product details
Overview
DS1005M-250 from Dallas Semiconductor is a 5-tap all-silicon delay line with fixed tap delays of 50 ns, 100 ns, 150 ns, 200 ns, and 250 ns; ±2 ns or ±3% delay tolerance; TTL/CMOS-compatible input; and capable of driving ten 74LS loads per tap. It operates at 5.0 V ±5%, supports 0°C to 70°C industrial temperature range, and is housed in an 8-pin DIP package.
For engineers reviewing the DS1005M-250 datasheet, DS1005M-250 pinout, DS1005M-250 application, or DS1005M-250 equivalent, key selection criteria include tap delay accuracy, edge fidelity (both leading and trailing), output drive strength, supply voltage stability, and compatibility with legacy DIP-based timing circuits in test equipment and digital signal conditioning systems.
Technical Context
The DS1005M-250 implements a monolithic silicon delay structure-not RC or analog-ensuring deterministic, repeatable propagation delays across all five taps. Each tap reproduces the input logic level after its specified fixed delay, with identical tPLH and tPHL values per tap.
It features dual-edge accuracy: both rising and falling edges are delayed within ±2 ns or ±3% tolerance, and all taps track unidirectionally with temperature/voltage variation-no relative skew between taps. Input pulse width must exceed 40% of Tap 5's tPLH (i.e., ≥100 ns) for guaranteed timing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Tap Delays | 50 ns / 100 ns / 150 ns / 200 ns / 250 ns - fixed, equally spaced, usable for multi-stage timing alignment |
| Delay Tolerance | ±2 ns or ±3%, whichever greater - ensures predictable setup/hold margins in synchronous logic |
| Supply Voltage | 4.75 V to 5.25 V - compatible with standard 5 V TTL/CMOS rails without regulation overhead |
| Output Drive | 12 mA sink / –1 mA source - sufficient to directly drive ten 74LS inputs without buffering |
| Input Thresholds | VIH ≥ 2.2 V, VIL ≤ 0.8 V - robust noise margin against 5 V logic families |
| Operating Temp | 0°C to 70°C - validated for industrial-grade embedded control and instrumentation |
| Input Capacitance | 5–10 pF - minimizes loading on preceding stage and preserves fast edge integrity |
Pinout & Package
DS1005M-250 is supplied in an 8-pin DIP (300-mil) package with gull-wing leads, auto-insertable and compatible with vapor-phase, IR, and wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Single-ended logic input; accepts TTL/CMOS levels; 5–10 pF load |
| 2 | TAP 2 | Second delay output (100 ns); full 74LS fanout capability |
| 3 | TAP 4 | Fourth delay output (200 ns); identical edge accuracy as IN |
| 4 | GND | Digital ground reference; decoupling required near VCC pin |
| 5 | VCC | +5 V supply; 40–70 mA active current draw at max frequency |
| 6 | TAP 1 | First delay output (50 ns); lowest latency tap for early sampling |
| 7 | TAP 3 | Third delay output (150 ns); center tap for symmetric delay trees |
| 8 | TAP 5 | Fifth delay output (250 ns); longest fixed delay; defines minimum input period |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon delay structure | Eliminates hybrid ceramic delay line drift, aging, and thermal hysteresis |
| Leading & trailing edge accuracy | Enables precise pulse-width preservation across all taps for timing-critical waveform shaping |
| Unidirectional tap tracking | Guarantees monotonic delay shift with temperature/voltage-no inter-tap skew inversion |
| Low-power CMOS design | Draws ≤70 mA at full operation-reduces thermal load in dense PCB layouts |
| Standard 8-pin DIP footprint | Direct replacement for legacy hybrid delay lines without board redesign |
Applications
| Test Equipment Signal Alignment | Digital Pulse Width Modulation |
|---|---|
Use Scenario: Aligning trigger, clock, and data strobes in automated test equipment (ATE) to meet tight setup/hold windows. IC Role / Device Role / Timing Role: DS1005M-250 provides five precisely spaced, stable delays to synchronize asynchronous signals across measurement channels. Use Value: Eliminates manual trimmer adjustment and improves repeatability across temperature and unit-to-unit variance. | Use Scenario: Generating phase-shifted PWM carriers in motor control inverters to reduce EMI and harmonic content. IC Role / Device Role / Timing Role: DS1005M-250 delivers five fixed, edge-accurate delays to create staggered gate drive timing across parallel IGBTs. Use Value: Enables deterministic dead-time insertion and reduces current spikes without microcontroller intervention. |
| Logic Glitch Suppression | High-Speed Data Capture Calibration |
Use Scenario: Filtering metastability-induced glitches in asynchronous FIFO handshaking or bus arbitration logic. IC Role / Device Role / Timing Role: DS1005M-250 introduces calibrated delay on control paths to enforce minimum assertion time before sampling. Use Value: Prevents race conditions in level-sensitive latches without adding FPGA logic resources or software latency. | Use Scenario: Calibrating time-of-flight offsets in high-speed ADC/DAC capture systems using known reference pulses. IC Role / Device Role / Timing Role: DS1005M-250 supplies traceable, temperature-stable delay references for channel-to-channel skew correction. Use Value: Achieves sub-nanosecond inter-channel alignment without custom ASIC or FPGA-based delay chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-tap delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1005-250 (14-pin DIP) | Same silicon core and tap delays; differs only in 14-pin DIP pinout (includes NC pins and duplicated GND/VCC) | Requires PCB layout change due to different pin count and spacing; suited for legacy 14-pin sockets | Select when replacing older hybrid delay lines in existing 14-pin DIP footprints |
| DS1005S-250 (16-pin SOIC) | Identical delay specs and electrical behavior; packaged in surface-mount 16-pin SOIC with NC pins repositioned | Designed for automated SMT assembly; not drop-in compatible with through-hole DIP layouts | Select for new designs targeting space-constrained, high-density PCBs with reflow capability |
Compared with DS1005-250 and DS1005S-250, the DS1005M-250 offers identical timing performance in a compact 8-pin DIP form factor-ideal for upgrading legacy systems where board real estate and through-hole assembly remain constraints, but pin count reduction is beneficial.
Availability
DS1005M-250 is available at Aetrix Electronics and suitable for test equipment signal alignment, digital pulse width modulation, and logic glitch suppression requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.
Supply support for DS1005M-250 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Dallas Semiconductor (now part of Maxim Integrated, then Analog Devices) specialized in precision timing, memory, and mixed-signal interface ICs for industrial and instrumentation markets.
The DS1005 family was designed to replace unreliable hybrid delay lines with monolithic silicon alternatives-targeting applications demanding stable, repeatable, and production-ready fixed delays without calibration.
FAQ
What is the exact delay value for each tap of DS1005M-250?
The DS1005M-250 provides five equally spaced delays: Tap 1 = 50 ns, Tap 2 = 100 ns, Tap 3 = 150 ns, Tap 4 = 200 ns, and Tap 5 = 250 ns. These values are specified as tPLH and tPHL at 25°C and 5.0 V, with tolerance of ±2 ns or ±3%, whichever is greater. All taps maintain identical edge accuracy and track unidirectionally under temperature and voltage variation.
Is DS1005M-250 pin-compatible with other DS1005 variants?
No-DS1005M-250 uses an 8-pin DIP pinout distinct from the 14-pin DIP (DS1005-250) and 16-pin SOIC (DS1005S-250) variants. While functionally identical, the pin assignments differ: DS1005M-250 consolidates power and ground to pins 4 and 5 and omits NC pins. PCB layout must be adapted for each package type.
Can DS1005M-250 drive standard TTL loads directly?
Yes-each tap of DS1005M-250 can drive up to ten 74LS loads, verified per DC electrical characteristics: IOL = 12 mA (min) at VOL = 0.5 V and IOH = –1 mA (min) at VOH = 4.0 V. This eliminates need for external buffers in most 5 V logic interfacing scenarios, including direct connection to 74LS, 74F, and 74HC inputs.
What is the minimum input pulse width required for accurate delay operation of DS1005M-250?
The DS1005M-250 requires an input pulse width (tWI) of at least 40% of Tap 5's tPLH, i.e., ≥100 ns, to ensure stable delay accuracy. Shorter pulses may cause degraded edge fidelity or increased jitter. The device is characterized with 500 ns pulses at 1 µs period under standard test conditions.
Does DS1005M-250 support extended temperature ranges?
No-the DS1005M-250 is rated for 0°C to 70°C operation per its Absolute Maximum Ratings and DC/AC Electrical Characteristics tables. Extended temperature versions (e.g., –40°C to +85°C) were offered for other DS1005 variants (e.g., DS1005X series), but no industrial or automotive grade version exists for the M-suffix 8-pin DIP configuration.
DS1005M-250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Taps/Steps:
- 5
- Function:
- Nonprogrammable
- Delay to 1st Tap:
- 50ns
- Tap Increment:
- 50 ns
- Available Total Delays:
- 250ns
- Number of Independent Delays:
- 1
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DS1005M-250 FAQ
1.How can I place an order for DS1005M-250 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1005M-250 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS1005M-250 reliable?
The price and inventory of DS1005M-250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1005M-250 is usually 5 days.
3.What payment methods are accepted for DS1005M-250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1005M-250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1005M-250?
DS1005M-250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1005M-250 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS1005M-250?
For technical support, including DS1005M-250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1005M-250 requirements.
6.How does Aetrix verify that DS1005M-250 is sourced from the original manufacturer or authorized distributors?
All DS1005M-250 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS1005M-250 meets industry standards.
7.What is the process for return or replacement of DS1005M-250?
All DS1005M-250 units undergo pre-shipment inspection (PSI). If there is an issue with DS1005M-250, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS1005M-250 part is unused and in its original packaging.
Return procedure for DS1005M-250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1005M-250 Tags
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LTC6994CS6-1#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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LTC6994IS6-2#TRMPBF
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Analog Devices Inc.
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LTC6994HS6-1#TRMPBF
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LTC6994HS6-2#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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DS1124U-25+T
Analog Devices Inc./Maxim Integrated
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