My Inquiry
My Account
Texas Instruments 74FCT162827CTPACT
- Part No.:
- 74FCT162827CTPACT
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74FCT162827CTPACT.pdf
- Description:
- IC BUF NON-INVERT 5.5V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,092
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74FCT162827CTPACT from Texas Instruments is a 20-bit non-inverting three-state buffer/line driver with balanced 24 mA output drivers, Ioff partial-power-down support, and 4.2 ns typical propagation delay (A to Y, C-load = 50 pF). It operates at 5V ±10% across −40°C to +85°C and is optimized for low-noise transmission-line driving in high-speed digital backplanes.
For engineers reviewing the 74FCT162827CTPACT datasheet, 74FCT162827CTPACT pinout, 74FCT162827CTPACT application, or 74FCT162827CTPACT equivalent, key selection criteria include output drive symmetry (24 mA sink/source), ground bounce performance (<0.6 V VOLP), output skew (<0.5 ns), and TSSOP-56 package compatibility with dense PCB layouts.
Technical Context
This device implements dual 10-bit buffered paths, each controlled by a pair of NANDed active-low output-enable inputs (OE1/OE2), enabling flexible channel partitioning. Its Ioff circuitry actively disables outputs during power-down, preventing reverse current flow when VCC = 0 V.
The 74FCT162827CTPACT integrates on-die current-limiting resistors in all 20 outputs, eliminating need for external series termination while minimizing undershoot and ground bounce-critical for clean signal integrity on controlled-impedance traces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails; no level-shifting required |
| Propagation Delay | 4.2 ns max (A→Y, CL=50 pF) - supports >200 MHz data rates in point-to-point or stubbed bus topologies |
| Output Drive | ±24 mA balanced - enables matched rise/fall times and reduced EMI vs. asymmetrical drivers |
| Ground Bounce (VOLP) | <0.6 V at VCC=5 V, TA=25°C - ensures stable reference plane behavior during simultaneous switching |
| Output Skew | <0.5 ns - maintains timing alignment across all 20 outputs for parallel data path integrity |
| Ioff Current | ±1 µA at VCC=0 V - prevents backflow damage during hot-insertion or partial system power-down |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
Pinout & Package
74FCT162827CTPACT is housed in a 56-lead Thin Shrunk Small Outline Package (TSSOP), 240-mil body width, 0.5 mm pitch, 1.2 mm max height (JEDEC MO-153 compliant). Pin 1 marked via corner chamfer; seating plane defined per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Data Inputs | 20 independent CMOS-compatible inputs; accept TTL/CMOS logic levels (VIL ≤ 0.8 V, VIH ≥ 2.0 V) |
| 1Y1–1Y10, 2Y1–2Y10 | Three-State Outputs | 20 buffered, current-limited outputs; high-impedance state enabled when OE1=OE2=HIGH |
| 1OE1, 1OE2, 2OE1, 2OE2 | Active-Low Output Enables | NAND logic: both OE inputs must be LOW to enable corresponding 10-bit group; enables split-bus control |
| VCC (Pins 25, 36, 48) | Power Supply | Three distributed VCC pins reduce supply impedance and improve noise immunity across wide die |
| GND (Pins 11, 12, 24, 35, 47, 56) | Ground Reference | Six dedicated GND pins minimize ground bounce and provide low-inductance return paths for all outputs |
Key Features
| Feature | Design Value |
|---|---|
| Balanced ±24 mA outputs | Enables symmetrical edge rates and minimal signal distortion on matched-impedance lines |
| Integrated current-limiting resistors | Eliminates need for 20 discrete series terminators; reduces BOM count and layout area |
| Typical output skew <0.5 ns | Maintains setup/hold timing margins in 20-bit parallel interfaces (e.g., address/data buses) |
| Ioff protection | Allows safe operation in partial-power-down systems without external isolation components |
| Low ground bounce (<0.6 V) | Preserves logic threshold stability during high-frequency switching, reducing bit-error risk |
Applications
| High-Speed Backplane Interface | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Driving 20-bit parallel data/address signals across 15 cm FR-4 backplane traces with 50 Ω characteristic impedance. IC Role / Device Role / Timing Role: Non-inverting buffer with matched source/sink drive, low skew, and integrated termination. Use Value: Eliminates external 20× 33 Ω series resistors; maintains <0.5 ns inter-output skew for reliable 100+ MHz sampling. |
Use Scenario: Isolating and strengthening CPU-side parallel control signals to modular I/O cards in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Three-state bus interface with Ioff support for hot-swap-capable card insertion/removal. Use Value: Prevents backfeed into powered-down modules; enables seamless field-replacement without system shutdown. |
| Telecom Line Card Data Buffering | Test Equipment Digital Pattern Generator |
|
Use Scenario: Conditioning 20-bit parallel configuration data from FPGA to multiple ASICs on a line card with mixed-voltage domains. IC Role / Device Role / Timing Role: Level-tolerant input buffer (TTL/CMOS compatible) with robust noise immunity. Use Value: Edge-rate control and <200 mV hysteresis suppress crosstalk-induced glitches in dense card layouts. |
Use Scenario: Generating synchronized 20-bit stimulus vectors at 125 MHz for IC functional testing. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring simultaneous edge delivery to DUT pins. Use Value: 4.2 ns max tPLH/tPHL and <0.5 ns skew guarantee tight vector timing windows under load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162827CTPVC | Same core silicon, SSOP-56 (300-mil width, 25-mil pitch); 0.2 mm larger footprint, 0.2 mm higher profile | Preferred where board reflow profile favors SSOP or legacy tooling exists for wider pitch | Select when mechanical compatibility with existing SSOP footprints is required; identical electrical specs |
| 74FCT162827BTPVCT | Slower speed grade: 5.0 ns max propagation delay; otherwise identical pinout, drive, and features | Suitable for cost-sensitive designs with relaxed timing budgets (e.g., sub-100 MHz control buses) | Choose for lower-cost sourcing where 0.8 ns timing margin is acceptable; same TSSOP-56 package |
Compared with CY74FCT162827CTPVC and 74FCT162827BTPVCT, the 74FCT162827CTPACT delivers the fastest propagation delay in the TSSOP-56 form factor while maintaining identical Ioff, skew, and drive strength-making it optimal for space-constrained, high-speed systems requiring minimal board real estate.
Availability
74FCT162827CTPACT is available at Aetrix Electronics and suitable for industrial automation, telecom line cards, and test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 74FCT162827CTPACT 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The FCT logic family-including the 74FCT162827CTPACT-is engineered for high-speed, low-noise, industrial-temperature operation with robust bus-interface capability and power-down safety.
FAQ
What is the maximum clock/data rate supported by the 74FCT162827CTPACT?
The 74FCT162827CTPACT supports reliable operation up to 200+ MHz in point-to-point configurations, based on its 4.2 ns max propagation delay (CL = 50 pF) and <0.5 ns output skew. Actual achievable rate depends on trace length, loading, and termination; for 300 pF loads, delay increases to 10.0 ns, limiting practical use to ~100 MHz in heavily loaded buses. The 74FCT162827CTPACT's balanced ±24 mA drive ensures clean edges even under these conditions.
Does the 74FCT162827CTPACT require external pull-up or pull-down resistors on its OE inputs?
No, the 74FCT162827CTPACT does not require external biasing on OE inputs. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and hysteresis (100 mV) ensure noise-immune switching directly from TTL or CMOS logic outputs. Unused OE pins should be tied to GND or VCC per datasheet guidance, but no pull resistors are needed for functional operation. This applies identically to all OE pins on the 74FCT162827CTPACT.
Can the 74FCT162827CTPACT be used in hot-swap applications?
Yes-the 74FCT162827CTPACT includes Ioff circuitry that disables outputs and limits reverse current to ±1 µA when VCC = 0 V, making it suitable for hot-swap I/O expansion modules. When a powered card is inserted into a live backplane, the 74FCT162827CTPACT prevents damaging current flow from other powered devices through its I/O pins. This feature is fully specified over −40°C to +85°C and requires no external components to implement.
What is the thermal resistance (θJA) of the 74FCT162827CTPACT in its TSSOP-56 package?
The 74FCT162827CTPACT in the TSSOP-56 (DGG) package has a typical junction-to-ambient thermal resistance (θJA) of 56°C/W under standard JEDEC JESD51-2 PCB conditions (2-layer board, 1 in² copper pad). Maximum power dissipation is limited to 1.0 W per absolute maximum ratings; under typical 20-bit toggle conditions at 10 MHz, total ICC remains below 5.5 mA, resulting in <28 mW dissipation-well within safe thermal margins without heatsinking.
How does the 74FCT162827CTPACT differ from the CY74FCT16827T series?
The 74FCT162827CTPACT uses balanced ±24 mA output drivers with integrated current-limiting resistors, yielding lower ground bounce (<0.6 V) and reduced need for external termination. In contrast, the CY74FCT16827T offers asymmetric 64 mA sink / 32 mA source drive, targeting high-capacitance backplanes. Both share pinout, Ioff, and temperature range-but only the 74FCT162827CTPACT is optimized for transmission-line signaling with matched edge rates and minimal undershoot.
74FCT162827CTPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74FCT162827CTPACT FAQ
1.How can I place an order for 74FCT162827CTPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162827CTPACT 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 74FCT162827CTPACT reliable?
The price and inventory of 74FCT162827CTPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162827CTPACT is usually 5 days.
3.What payment methods are accepted for 74FCT162827CTPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162827CTPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT162827CTPACT?
74FCT162827CTPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162827CTPACT 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 74FCT162827CTPACT?
For technical support, including 74FCT162827CTPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162827CTPACT requirements.
6.How does Aetrix verify that 74FCT162827CTPACT is sourced from the original manufacturer or authorized distributors?
All 74FCT162827CTPACT 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 74FCT162827CTPACT meets industry standards.
7.What is the process for return or replacement of 74FCT162827CTPACT?
All 74FCT162827CTPACT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162827CTPACT, 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 74FCT162827CTPACT part is unused and in its original packaging.
Return procedure for 74FCT162827CTPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74FCT162827CTPACT 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…
