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Texas Instruments TIBPAL20L10-20CFN
- Part No.:
- TIBPAL20L10-20CFN
- Manufacturer:
- Texas Instruments
- Category:
- PLDs (Programmable Logic Device)
- Package:
- -
- Datasheet:
-
TIBPAL20L10-20CFN.pdf
- Description:
- OT PLD, 20NS, PAL-TYPE, TTL,
- Quantity:
- Payment:
- Shipping:
Inventory:1,269
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Product details
Overview
TIBPAL20L10-20CFN from Texas Instruments is a bipolar PAL (Programmable Array Logic) device with 20-pin ceramic DIP package, 10 registered outputs, 20 ns maximum propagation delay, and TTL-compatible inputs/outputs. It implements combinational and registered logic functions in industrial control sequencers and legacy instrumentation interfaces.
For engineers reviewing the TIBPAL20L10-20CFN datasheet, TIBPAL20L10-20CFN pinout, TIBPAL20L10-20CFN application, or TIBPAL20L10-20CFN equivalent, key selection factors include propagation delay tolerance, registered output capability, TTL-level interface compatibility, and military-grade ceramic packaging for thermal and mechanical stability in harsh environments.
Technical Context
The TIBPAL20L10-20CFN implements a fixed-architecture programmable logic array with 10 macrocells, each supporting registered (D-type flip-flop) or combinatorial output modes. Its architecture includes dedicated product-term sharing and output enable control per macrocell.
It operates from a single +5 V supply, features TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V), and guarantees output drive strength of –20 mA (IOH) and 20 mA (IOL) under full commercial temperature range (0 °C to +70 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Type | Bipolar PAL with registered outputs - enables synchronous state machine implementation without external latches. |
| Propagation Delay | 20 ns max - ensures timing compliance in 50 MHz clock-domain edge-sensitive control logic. |
| Supply Voltage | +5 V ±5% - compatible with standard TTL power rails and eliminates need for voltage translation. |
| Output Drive | –20 mA / +20 mA - directly drives multiple 74LS inputs or discrete LEDs without buffer stages. |
| Package | 20-pin CERDIP (CFN) - hermetically sealed ceramic package rated for MIL-PRF-35835 Class V space-level reliability. |
| Temperature Range | 0 °C to +70 °C - validated for commercial and extended industrial ambient conditions. |
Pinout & Package
20-pin Ceramic Dual In-line Package (CERDIP), hermetically sealed, with 0.3-inch body width and 0.1-inch pin pitch. Pin 1 marked by notch or dot; pins arranged in two parallel rows.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 9, 10, 11 | Input | Active-high TTL-compatible logic inputs accepting standard 74-series signal levels. |
| 13–20 | Registered Output | 10 active-low registered outputs with internal D-type flip-flops clocked on rising edge of CLK (Pin 8). |
| 8 | CLK | Asynchronous clock input controlling all 10 registered outputs; TTL-compatible edge-triggered timing reference. |
| 12 | GND | Signal ground reference for all I/O and internal logic. |
| 20 | VCC | +5 V power supply connection; decoupling capacitor required within 1 cm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Registered macrocell architecture | 10 fully independent D-type flip-flops with individual output enable - supports multi-stage pipeline control without external registers. |
| CERDIP packaging | MIL-PRF-35835 Class V qualified - provides hermetic sealing, low outgassing, and thermal cycling endurance for aerospace and defense systems. |
| TTL-compatible I/O | Direct interface with 74LS/74ALS families - eliminates level-shifting components and reduces BOM count. |
| 20 ns propagation delay | Guaranteed timing margin for 50 MHz system clocks - enables use in high-speed address decoding and bus arbitration logic. |
Applications
| Industrial PLC Sequencing | Aerospace Avionics Interface |
|---|---|
Use Scenario: Real-time sequencing of I/O modules in programmable logic controller backplanes using fixed-cycle scan logic. IC Role / Device Role / Timing Role: Synchronous state register bank implementing cycle-synchronized output updates aligned to master system clock. Use Value: 20 ns propagation delay and registered outputs ensure deterministic timing across 10 parallel control lines, eliminating race conditions in safety-critical ladder logic execution. | Use Scenario: Discrete signal conditioning and status encoding in flight control computer peripheral interfaces. IC Role / Device Role / Timing Role: Registered logic translator converting asynchronous sensor alerts into synchronized, glitch-free status words for CPU polling. Use Value: CERDIP packaging and Class V qualification guarantee operation under thermal shock and vacuum conditions encountered in avionics bays. |
| Legacy Test Equipment Control | Military Communications Chassis |
Use Scenario: Address decoding and handshake generation in automated test equipment mainframes built around 1980s-era microprocessors. IC Role / Device Role / Timing Role: Combinatorial decoder and registered strobe generator coordinating memory-mapped peripheral access. Use Value: TTL-compatible inputs/outputs and 20-pin DIP footprint allow drop-in replacement of obsolete PAL16L8 variants without PCB redesign. | Use Scenario: Secure mode configuration and fault flag aggregation in encrypted radio chassis requiring radiation-tolerant logic. IC Role / Device Role / Timing Role: Radiation-hardened logic element performing secure boot-state validation and hardware-enforced fail-safe transitions. Use Value: MIL-PRF-35835 qualification and Rochester's Class Q/V manufacturing ensure traceable pedigree and long-term supply continuity for DLA-critical programs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMD PAL16L8-25JC | 8 registered outputs, 25 ns propagation delay, plastic DIP package - lower speed and non-hermetic enclosure. | Suitable for commercial benchtop instruments but not qualified for aerospace or military thermal/vacuum environments. | Select only when CERDIP reliability and 20 ns timing are not required. |
| TI TIBPAL16R6-20CN | 6 registered outputs, same 20 ns delay and CERDIP package - reduced macrocell count limits state register depth. | Applicable where fewer concurrent control states are needed, e.g., simple watchdog or reset sequencer logic. | Choose when 10-output capacity is excessive and board space allows same-footprint substitution. |
Compared with AMD PAL16L8-25JC and TI TIBPAL16R6-20CN, the TIBPAL20L10-20CFN uniquely delivers 10 registered outputs at 20 ns speed in a Class V space-qualified CERDIP package - making it the only option for high-channel-count, mission-critical synchronous logic in constrained thermal and reliability environments.
Availability
TIBPAL20L10-20CFN is available at Aetrix Electronics and suitable for industrial PLC sequencing, aerospace avionics interfaces, and legacy test equipment control requiring stable component supply and long-term obsolescence mitigation.
Supply support for TIBPAL20L10-20CFN 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
Texas Instruments is a U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and aerospace markets.
The TIBPAL family was designed in the 1980s as high-reliability bipolar PAL devices targeting military, avionics, and industrial control systems requiring deterministic timing and hermetic packaging.
FAQ
What is the maximum operating frequency supported by TIBPAL20L10-20CFN?
The TIBPAL20L10-20CFN has a guaranteed 20 ns maximum propagation delay, supporting reliable operation up to 50 MHz in synchronous logic paths. This value is measured from CLK to registered output and reflects worst-case timing across the full commercial temperature range. The TIBPAL20L10-20CFN does not specify a maximum clock frequency limit beyond this delay-based constraint.
Is TIBPAL20L10-20CFN pin-compatible with PAL16L8 devices?
No, the TIBPAL20L10-20CFN is not pin-compatible with PAL16L8 devices. It uses a 20-pin CERDIP package with 10 registered outputs and dedicated CLK input (Pin 8), whereas PAL16L8 uses a 20-pin package with different pin assignments including OE and separate output polarity controls. The TIBPAL20L10-20CFN requires PCB layout verification before substitution.
Does TIBPAL20L10-20CFN support mixed combinatorial and registered logic in the same device?
Yes, the TIBPAL20L10-20CFN supports both combinatorial and registered logic modes. Each of its 10 macrocells can be configured via fusible-link programming to operate as either a pure combinational output or a registered (D-type flip-flop) output. This flexibility allows the TIBPAL20L10-20CFN to implement hybrid logic structures such as address decoders with latched enable signals.
What qualification standards apply to TIBPAL20L10-20CFN?
The TIBPAL20L10-20CFN meets MIL-PRF-35835 Class V Space Level requirements and is manufactured by Rochester Electronics under AS9120 and ISO-9001 certification. Its CERDIP package is hermetically sealed and qualified for thermal cycling, low outgassing, and operation in vacuum - satisfying DLA-critical program requirements for aerospace and defense applications.
Can TIBPAL20L10-20CFN be reprogrammed after initial fuse programming?
No, the TIBPAL20L10-20CFN uses one-time-programmable (OTP) bipolar fusible-link technology. Once programmed, its logic function is permanently fixed. Reprogramming is not possible. Engineers must verify logic equations and timing closure prior to programming, as the TIBPAL20L10-20CFN cannot be modified post-configuration.
TIBPAL20L10-20CFN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Programmable Type:
- -
- Number of Macrocells:
- -
- Voltage - Input:
- -
- Speed:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TIBPAL20L10-20CFN FAQ
1.How can I place an order for TIBPAL20L10-20CFN through Aetrix?
Please submit a Request for Quotation (RFQ) for TIBPAL20L10-20CFN 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 TIBPAL20L10-20CFN reliable?
The price and inventory of TIBPAL20L10-20CFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIBPAL20L10-20CFN is usually 5 days.
3.What payment methods are accepted for TIBPAL20L10-20CFN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIBPAL20L10-20CFN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TIBPAL20L10-20CFN?
TIBPAL20L10-20CFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TIBPAL20L10-20CFN 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 TIBPAL20L10-20CFN?
For technical support, including TIBPAL20L10-20CFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIBPAL20L10-20CFN requirements.
6.How does Aetrix verify that TIBPAL20L10-20CFN is sourced from the original manufacturer or authorized distributors?
All TIBPAL20L10-20CFN 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 TIBPAL20L10-20CFN meets industry standards.
7.What is the process for return or replacement of TIBPAL20L10-20CFN?
All TIBPAL20L10-20CFN units undergo pre-shipment inspection (PSI). If there is an issue with TIBPAL20L10-20CFN, 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 TIBPAL20L10-20CFN part is unused and in its original packaging.
Return procedure for TIBPAL20L10-20CFN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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