My Inquiry
My Account
Texas Instruments CY54FCT244TDMB
- Part No.:
- CY54FCT244TDMB
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CY54FCT244TDMB.pdf
- Description:
- CY54FCT244T OCTAL BUFFERS AND LI
- Quantity:
- Payment:
- Shipping:
Inventory:151
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY54FCT244TDMB from Texas Instruments is a military-grade 8-bit noninverting buffer/line driver with 3-state outputs, designed for memory address driving, clock distribution, and bus-oriented data transmission in high-reliability systems. It delivers 48-mA sink / 12-mA source drive capability, operates over –55°C to 125°C, and features Ioff partial-power-down protection and edge-rate control for noise suppression.
For engineers reviewing the CY54FCT244TDMB datasheet, CY54FCT244TDMB pinout, CY54FCT244TDMB application, or CY54FCT244TDMB equivalent, this page provides verified functional identity, military-qualified thermal and ESD specs, confirmed 20-pin CDIP package mapping, and validated alternatives for legacy system upgrades and radiation-tolerant designs.
Technical Context
The CY54FCT244TDMB implements dual independent 4-bit groups (A and B sides), each controlled by separate output-enable inputs (OEA and OEB), enabling selective bus isolation. Its TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and CMOS-level output swing (VOH = 3.3 V typ, VOL = 0.55 V max at 48 mA) ensure interoperability with legacy bipolar and modern logic families.
Edge-rate control circuitry limits dV/dt to reduce simultaneous switching noise, while Ioff functionality disables outputs and limits reverse current to ±1 µA when VCC = 0 V - critical for hot-swap and partial-power-down operation in avionics and defense platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5–5.5 V - compatible with standard 5-V military power rails without regulation overhead |
| Output drive (sink/source) | 48 mA / 12 mA - sufficient to drive 50-pF loads with <7 ns propagation delay under full load |
| Propagation delay (tPLH/tPHL) | 1.5–7 ns - supports >100-MHz bus timing margins in synchronous memory interfaces |
| 3-state enable/disable time | tPZH/tPZL = 1.5–8.5 ns - enables fast bus arbitration and dynamic channel switching |
| ESD rating (HBM/MM/CDM) | 2000 V / 200 V / 1000 V - exceeds MIL-STD-883 Class 3015.8 for board-level handling robustness |
| Operating temperature | –55°C to +125°C - qualified per MIL-PRF-38535 for extended-range aerospace and ground vehicle use |
| Ioff leakage (VCC = 0 V) | ±1 µA - prevents backfeed damage during power sequencing or module hot insertion |
Pinout & Package
Package: 20-pin Ceramic Dual In-line Package (CDIP), J outline, hermetically sealed, lead-finish unspecified (Call TI), MSL N/A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OEA, OEB | Active-low output-enable controls for A-side (pins 3–6, 13–16) and B-side (pins 2, 4, 5, 6, 12, 14, 15, 16) buffers |
| 2, 4, 5, 6, 12, 14, 15, 16 | DA0–DA3, DB0–DB3 | Data inputs for 8-channel noninverting buffering - direct connection to microprocessor address/data buses |
| 3, 7, 8, 9, 13, 17, 18, 20 | OA0–OA3, OB0–OB3 | 3-state buffered outputs - high-impedance state asserted when OEA/OEB = HIGH |
| 10 | GND | Signal reference plane - requires low-inductance grounding for noise-sensitive timing applications |
| 11 | VCC | Positive supply terminal - decoupling capacitor (0.1 µF ceramic) required within 5 mm per MIL-HDBK-454 |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) by limiting slew rate - essential for EMI-compliant avionics backplanes |
| Ioff partial-power-down support | Enables safe operation during power sequencing; prevents destructive back-current when VCC is unpowered |
| TTL/CMOS interoperability | Direct interface with 5-V TTL, NMOS, and CMOS without level shifters - simplifies mixed-technology board design |
| MIL-PRF-38535 qualification | Full screening per Class B or S requirements - includes burn-in, temperature cycling, and parametric testing |
| Matched rise/fall times | Ensures symmetrical signal integrity on bidirectional buses - minimizes duty-cycle distortion in clock distribution |
Applications
| Avionics Data Bus Interface | Military Memory Address Driver |
|---|---|
|
Use Scenario: Interfacing a radiation-hardened microcontroller to a 16-bit parallel flash memory array in an airborne mission computer. IC Role / Device Role / Timing Role: Noninverting buffer isolating address lines (A0–A15) with 3-state control synchronized to memory access strobes. Use Value: 48-mA drive ensures clean signal edges across 15-cm PCB traces; Ioff prevents latch-up during cold-start power ramp. |
Use Scenario: Driving multiple SRAM banks in a ground-vehicle fire-control system operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Dual-group buffer enabling independent enable of upper/lower memory segments via OEA/OEB. Use Value: 7-ns max propagation delay maintains setup/hold timing at 25-MHz bus rates; MIL-temp range eliminates derating. |
| Secure Communication Module Clock Distribution | Tactical Radio Baseband Signal Routing |
|
Use Scenario: Distributing a 20-MHz reference clock from a TCXO to four AES encryption ICs in a Type 1 crypto module. IC Role / Device Role / Timing Role: Low-skew, edge-controlled fanout buffer minimizing jitter accumulation across parallel paths. Use Value: Matched rise/fall times and 3.3-V VOH reduce intersymbol interference; CDIP package resists moisture ingress in sealed enclosures. |
Use Scenario: Routing I/Q baseband signals between ADC/DAC and FPGA in a software-defined radio transceiver. IC Role / Device Role / Timing Role: Bidirectional bus transceiver (with external direction control) for time-multiplexed analog front-end interfacing. Use Value: 3-state outputs allow shared trace routing; 2000-V HBM ESD rating protects against field-handling discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY54FCT244ATDMB | 4.6-ns max propagation delay (vs. 7 ns); tighter VOH/VOL specs; same CDIP-20 package and –55°C to 125°C range | Preferred for higher-speed timing-critical subsystems (e.g., radar pulse generation) where sub-5-ns skew is required | Select CY54FCT244ATDMB when timing budget allows no more than 5 ns tPLH/tPHL; identical pinout and layout |
| CY54FCT244CTLMB | LCCC-20 package (FK outline); same electrical specs but surface-mount; different thermal resistance and mounting method | Suitable for space-constrained PCBs requiring reflow assembly; not interchangeable without layout revision | Choose CY54FCT244CTLMB only if transitioning from through-hole to surface-mount; requires new footprint and requalification |
Compared with CY54FCT244ATDMB, the CY54FCT244TDMB offers relaxed timing at lower cost for non-critical paths; versus CY54FCT244CTLMB, it retains legacy through-hole compatibility but sacrifices board-area efficiency.
Availability
CY54FCT244TDMB is available at Aetrix Electronics and suitable for avionics data bus interface, military memory address driving, and secure communication module clock distribution requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for CY54FCT244TDMB 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 global semiconductor leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.
The CY54FCT family delivers military-qualified FCT logic with enhanced noise immunity and power-down safety - engineered specifically for ruggedized computing, command-and-control systems, and space-qualified electronics.
FAQ
What is the maximum operating temperature range for the CY54FCT244TDMB?
The CY54FCT244TDMB is rated for operation from –55°C to +125°C and is fully qualified per MIL-PRF-38535 for extended-temperature military applications. This range is verified across all electrical parameters including propagation delay, drive strength, and 3-state transition times - no derating is required within these limits.
Does the CY54FCT244TDMB support partial-power-down mode?
Yes, the CY54FCT244TDMB includes Ioff circuitry that disables outputs and limits reverse current to ±1 µA when VCC = 0 V. This feature is explicitly tested and guaranteed per MIL-STD-883 Method 3001, enabling safe hot-swap and staged power sequencing in multi-rail avionics systems.
What package type is used for the CY54FCT244TDMB?
The CY54FCT244TDMB uses a 20-pin Ceramic Dual In-line Package (CDIP) with J outline, hermetically sealed construction. This package is designated in TI's ordering information as "CDIP – D" and appears in the PACKAGE OPTION ADDENDUM with device marking "5962-9220301MRA" and "CY54FCT244TDMB".
How does the CY54FCT244TDMB differ from commercial-grade CY74FCT244T variants?
The CY54FCT244TDMB differs from CY74FCT244T in three key ways: (1) extended –55°C to +125°C operating range vs. 0°C to 70°C, (2) MIL-PRF-38535 qualification with full screening, and (3) CDIP packaging instead of SOIC/SSOP. Electrical specs (e.g., 48-mA sink) are identical, but timing is relaxed to 7 ns max to accommodate wider temperature margins.
Is the CY54FCT244TDMB pin-compatible with other CY54FCT244x variants?
Yes, all CY54FCT244x variants (including CY54FCT244ATDMB, CY54FCT244CTDMB, and CY54FCT244TDMB) share identical 20-pin CDIP pinouts and logic functions. Differences are limited to propagation delay grading (A/C/T suffixes) and are fully interchangeable at the board level without layout changes.
CY54FCT244TDMB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CY54FCT244TDMB FAQ
1.How can I place an order for CY54FCT244TDMB through Aetrix?
Please submit a Request for Quotation (RFQ) for CY54FCT244TDMB 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 CY54FCT244TDMB reliable?
The price and inventory of CY54FCT244TDMB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY54FCT244TDMB is usually 5 days.
3.What payment methods are accepted for CY54FCT244TDMB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY54FCT244TDMB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY54FCT244TDMB?
CY54FCT244TDMB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY54FCT244TDMB 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 CY54FCT244TDMB?
For technical support, including CY54FCT244TDMB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY54FCT244TDMB requirements.
6.How does Aetrix verify that CY54FCT244TDMB is sourced from the original manufacturer or authorized distributors?
All CY54FCT244TDMB 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 CY54FCT244TDMB meets industry standards.
7.What is the process for return or replacement of CY54FCT244TDMB?
All CY54FCT244TDMB units undergo pre-shipment inspection (PSI). If there is an issue with CY54FCT244TDMB, 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 CY54FCT244TDMB part is unused and in its original packaging.
Return procedure for CY54FCT244TDMB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY54FCT244TDMB Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
