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Texas Instruments 74FCT162H244CTPVC
- Part No.:
- 74FCT162H244CTPVC
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74FCT162H244CTPVC.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,812
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Product details
Overview
74FCT162H244CTPVC from Texas Instruments is a 16-bit non-inverting 3-state buffer/line driver with bus-hold inputs, designed for memory and bus interface applications requiring high-speed (4.1 ns max propagation delay), low-noise operation, and Ioff partial-power-down support. It delivers ±24 mA balanced output drive at 5V, operates across –40°C to +85°C, and uses a 48-pin SSOP package.
For engineers reviewing the 74FCT162H244CTPVC datasheet, 74FCT162H244CTPVC pinout, 74FCT162H244CTPVC application, or 74FCT162H244CTPVC equivalent, key selection criteria include bus-hold functionality eliminating external pull resistors, 24-mA balanced drive for transmission-line compatibility, Ioff protection during power sequencing, and industrial-temperature SSOP packaging.
Technical Context
This device implements dual 8-bit or quad 4-bit configurable 3-state buffering via independent OE controls per 4-bit group (1OE–4OE). Its bus-hold circuitry actively retains the last logic state on each A-input when floating, preventing undefined states without external biasing.
The output stage uses current-limited drivers to reduce ground bounce (VOLP < 0.6 V) and undershoot, while edge-rate control minimizes switching noise. Propagation delay (tPLH/tPHL ≤ 4.1 ns), output skew (< 0.5 ns), and Ioff enable robust operation in mixed-voltage or hot-swap systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 5 V ± 10% - Ensures compatibility with standard TTL/CMOS 5-V systems and stable operation under supply variation. |
| Propagation Delay | ≤ 4.1 ns - Enables reliable timing in high-speed address/data bus applications up to ~200 MHz clock domains. |
| Output Drive | ±24 mA - Provides sufficient current to drive 50-Ω transmission lines or multiple TTL loads without external termination. |
| Bus-Hold Current | ±50 µA sustain, ±100 µA overdrive - Maintains valid logic levels on un-driven inputs, eliminating need for 4.7-kΩ pull-up/down resistors. |
| Ioff Leakage | ±1 µA at VCC = 0 V - Prevents back-drive current into powered sections during partial power-down, protecting system integrity. |
| Operating Temp | –40°C to +85°C - Qualified for industrial environments including factory automation, telecom infrastructure, and embedded control. |
| ESD Rating | >2000 V HBM - Supports handling and assembly in standard manufacturing without special ESD precautions. |
Pinout & Package
The 74FCT162H244CTPVC is housed in a 48-pin Shrunk Small Outline Package (SSOP), 300-mil body width, with 0.025-inch (0.635 mm) lead pitch. Pin 1 is marked by a notch or dot; package conforms to JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (with bus hold) | 16 buffered inputs; each retains last logic state when floating, removing need for external biasing. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | 3-State Outputs | 16 non-inverting outputs; high-impedance when corresponding OE is HIGH, enabling bus sharing. |
| 1OE–4OE | Active-Low Output Enable | Four independent enables allow 4-bit, 8-bit, or full 16-bit group control - simplifies partial bus gating. |
| VCC (Pins 24, 48) | Power Supply | Dual VCC pins reduce supply inductance and improve noise immunity across wide bus layouts. |
| GND (Pins 25, 47) | Ground Reference | Dual GND pins provide low-inductance return paths, critical for minimizing ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Inputs | Eliminates external pull-up/pull-down resistors on all 16 data inputs, reducing BOM count and PCB area. |
| Ioff Partial-Power-Down | Disables outputs and blocks reverse current flow when VCC = 0 V, enabling safe insertion/removal in live backplanes. |
| Edge-Rate Controlled Outputs | Reduces simultaneous switching noise (SSN) and EMI, improving signal integrity on dense PCBs and backplanes. |
| Balanced ±24-mA Drive | Matches source/sink strength to minimize duty-cycle distortion and ground/power rail collapse during heavy switching. |
| Low Ground Bounce (VOLP) | <0.6 V at VCC = 5 V - Limits voltage droop on shared ground nets, preserving noise margins for adjacent logic. |
Applications
| Memory Address Buffering | Industrial Backplane Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer with bus-hold, providing clean, noise-immune address distribution and preventing floating lines during chip select transitions. Use Value: Eliminates 16 external pull-up resistors and ensures deterministic address states during power-up or reset, reducing risk of memory access errors. | Use Scenario: Interfacing a CPU module to a multi-slot industrial backplane carrying parallel control and status signals. IC Role / Device Role / Timing Role: High-speed, low-skew line driver enabling synchronous 16-bit data transfer between modules with precise timing alignment. Use Value: 4.1 ns max propagation delay and <0.5 ns output skew maintain setup/hold timing across all 16 bits, supporting reliable inter-module communication at >100 MHz effective rate. |
| Hot-Swappable I/O Expansion | Legacy Bus Signal Conditioning |
Use Scenario: Adding removable I/O cards to a powered industrial PLC chassis where modules may be inserted or removed without system shutdown. IC Role / Device Role / Timing Role: Isolation buffer with Ioff protection, preventing back-driving of active bus lines when the card is partially powered or unpowered. Use Value: ±1 µA Ioff leakage prevents damage or corruption of main controller signals, enabling true hot-swap capability without complex power sequencing. | Use Scenario: Adapting legacy ISA or VME bus signals to modern FPGA-based controllers requiring clean, slew-controlled, high-drive signals. IC Role / Device Role / Timing Role: Level-shifting and noise-suppressed buffer that matches impedance and drive strength to older bus specifications. Use Value: Edge-rate control and ±24 mA drive ensure compatibility with long, unterminated legacy bus traces while suppressing ringing and overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus-hold buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162H244ATPVC | Slower 4.8 ns max propagation delay; otherwise identical bus-hold, Ioff, and drive specs. | Suitable for lower-speed designs where timing margin allows relaxed delay; same pinout and footprint. | Select when 4.1 ns speed is unnecessary and cost or inventory availability favors the 'A' speed grade. |
| 74FCT162244CTPVC | No bus-hold inputs; 24-mA balanced drive and Ioff retained; identical timing (4.1 ns). | Requires external pull-up/down resistors on all inputs; preferred where input states are always driven. | Choose when bus-hold is not needed and design already includes termination; offers same performance with simpler input behavior. |
Compared with 74FCT162H244CTPVC, the CY74FCT162H244ATPVC trades 0.7 ns speed for broader availability in some channels, while the 74FCT162244CTPVC removes bus-hold to reduce input complexity - both retain identical 48-pin SSOP packaging and Ioff safety for industrial use.
Availability
74FCT162H244CTPVC is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, and hot-swappable I/O expansion requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74FCT162H244CTPVC 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 with emphasis on reliability, industrial-grade qualification, and long-term product support.
The 74FCT162H244CTPVC belongs to TI's FCT logic family - engineered for high-speed, low-noise, industrial-temperature bus interfacing with features like bus-hold and Ioff to simplify system-level design and enhance robustness.
FAQ
What is the function of bus-hold circuitry in the 74FCT162H244CTPVC?
The bus-hold circuitry in the 74FCT162H244CTPVC actively maintains the last valid logic state on each of its 16 input pins when those inputs become electrically floating. This eliminates the need for external pull-up or pull-down resistors, reduces component count, and prevents undefined states during power-up, reset, or signal disconnection. The 74FCT162H244CTPVC sustains this state with ±50 µA current, ensuring stability across the full industrial temperature range.
Does the 74FCT162H244CTPVC support partial power-down operation?
Yes, the 74FCT162H244CTPVC supports partial power-down via its Ioff feature. When VCC is at 0 V, the outputs are disabled and leakage current is limited to ±1 µA, preventing damaging current backflow from powered system sections into the unpowered device. This capability makes the 74FCT162H244CTPVC suitable for hot-swap applications and mixed-power-domain designs where subsystems power up/down independently.
What package type and dimensions does the 74FCT162H244CTPVC use?
The 74FCT162H244CTPVC uses a 48-pin Shrunk Small Outline Package (SSOP) with 300-mil body width and 0.025-inch (0.635 mm) lead pitch, designated O48 per TI's ordering nomenclature. Its mechanical outline complies with JEDEC MO-153, measuring 12.6 mm × 6.2 mm × 1.95 mm max height. The package includes dual VCC and GND pins to minimize supply inductance and ground bounce.
How does the 74FCT162H244CTPVC differ from the standard 74FCT16244CTPVC?
The 74FCT162H244CTPVC differs from the 74FCT16244CTPVC primarily in input structure: it includes bus-hold circuitry on all 16 inputs, whereas the 74FCT16244CTPVC has standard TTL-compatible inputs requiring external biasing when floating. Both share identical 4.1 ns speed grade, ±24 mA drive, Ioff, and SSOP packaging. The 74FCT162H244CTPVC also replaces the 74FCT16244CTPVC's higher 32 mA source/64 mA sink asymmetry with balanced drive.
What are the absolute maximum ratings for the 74FCT162H244CTPVC?
The 74FCT162H244CTPVC has an absolute maximum storage temperature of –55°C to +125°C, DC input/output voltage range of –0.5 V to +7.0 V, maximum sink current per pin of –60 mA, and total power dissipation limit of 1.0 W. Static discharge voltage exceeds 2000 V per MIL-STD-883 Method 3015. These ratings define stress limits beyond which device reliability may degrade; the 74FCT162H244CTPVC is specified to operate continuously within –40°C to +85°C at 5 V ±10%.
74FCT162H244CTPVC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- 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:
- 48-SSOP
74FCT162H244CTPVC FAQ
1.How can I place an order for 74FCT162H244CTPVC through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162H244CTPVC 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 74FCT162H244CTPVC reliable?
The price and inventory of 74FCT162H244CTPVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162H244CTPVC is usually 5 days.
3.What payment methods are accepted for 74FCT162H244CTPVC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162H244CTPVC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT162H244CTPVC?
74FCT162H244CTPVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162H244CTPVC 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 74FCT162H244CTPVC?
For technical support, including 74FCT162H244CTPVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162H244CTPVC requirements.
6.How does Aetrix verify that 74FCT162H244CTPVC is sourced from the original manufacturer or authorized distributors?
All 74FCT162H244CTPVC 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 74FCT162H244CTPVC meets industry standards.
7.What is the process for return or replacement of 74FCT162H244CTPVC?
All 74FCT162H244CTPVC units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162H244CTPVC, 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 74FCT162H244CTPVC part is unused and in its original packaging.
Return procedure for 74FCT162H244CTPVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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