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STMicroelectronics 74VCX162244TTR
- Part No.:
- 74VCX162244TTR
- Manufacturer:
- STMicroelectronics
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74VCX162244TTR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,857
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Product details
Overview
74VCX162244TTR from STMicroelectronics is a 16-bit non-inverting 3-state bus buffer with 3.6V-tolerant I/O, operating from 1.8V to 3.6V supply, delivering 3.4 ns max propagation delay at 3.0–3.6V, ±12 mA output drive, and integrated 26Ω series output resistors for noise suppression - used in low-voltage memory address/data bus interfacing between 1.8V/2.5V/3.3V domains.
For engineers reviewing the 74VCX162244TTR datasheet, 74VCX162244TTR pinout, 74VCX162244TTR application, or 74VCX162244TTR equivalent, key selection criteria include voltage-domain bridging capability, output impedance control, latch-up immunity (>300 mA), ESD robustness (HBM >2 kV), and TSSOP-48 package compatibility with high-density PCB layouts.
Technical Context
This device implements four independent 4-bit non-inverting buffers, each controlled by a dedicated active-low Output Enable (nG) input (pins 1, 24, 25, 48). All 16 outputs feature built-in 26Ω series termination to dampen signal reflections and reduce simultaneous switching noise in high-speed digital buses.
It supports mixed-voltage system interfacing: inputs and outputs tolerate up to 3.6V regardless of VCC (1.8–3.6V), enabling safe connection to legacy 3.3V or 3.6V logic while powered from lower-core supplies - critical for power-aware memory subsystems and FPGA I/O expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.8V to 3.6V - enables operation across 1.8V, 2.5V, and 3.3V logic families without level shifters |
| tPD (Max) | 3.4 ns at VCC = 3.0–3.6V - supports >200 MHz bus timing in memory address/data paths |
| IOL / IOH (Min) | ±12 mA at VCC = 3.0V - drives standard CMOS loads with margin under worst-case VCC and temperature |
| IOH/IOZ Leakage | ±10 µA - ensures minimal current draw in high-impedance state, preserving bus integrity |
| Input/Output Tolerance | Up to 3.6V - allows direct interface to higher-voltage peripherals without external clamping |
| Latch-up Immunity | >300 mA (JESD17) - prevents destructive latch-up during transient overvoltage events |
| ESD Rating | HBM >2000V, MM >200V - meets industrial handling and board-level ESD requirements |
Pinout & Package
TSSOP-48 (Thin Shrink Small Outline Package), 12.6 mm × 8.1 mm body, 0.5 mm pitch, lead-free and RoHS-compliant per STMicroelectronics specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | Active-Low Output Enable (nG) | Each controls 4 outputs; LOW enables driver, HIGH places outputs in high-Z state |
| 2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23, 26–27, 29–30, 32–33, 35–36, 37–38, 40–41, 43–44, 46–47 | Data Outputs (Y1–Y4 per group) | 16 total non-inverting buffered outputs, each with 26Ω series resistor for edge-rate control |
| 43–44, 46–47, 37–38, 40–41, 32–33, 35–36, 26–27, 29–30, 19–20, 22–23, 13–14, 16–17, 8–9, 11–12, 2–3, 5–6 | Data Inputs (A1–A4 per group) | 16 total inputs, 3.6V-tolerant, compatible with 1.8V/2.5V/3.3V logic levels |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground pins distributed for low-inductance return path and noise reduction |
| 7, 18, 31, 42 | VCC | Four dedicated power pins minimize IR drop and improve supply decoupling effectiveness |
Key Features
| Feature | Design Value |
|---|---|
| 3.6V-tolerant I/O | Enables direct interconnection with 3.3V/3.6V systems while operating from 1.8V core supply - eliminates discrete level translators |
| Integrated 26Ω output series resistors | Reduces ringing and crosstalk on PCB traces without requiring external termination components |
| Symmetrical output drive (|IOH| = IOL) | Ensures matched rise/fall times and consistent timing margins across logic transitions |
| Power-down protection | Prevents back-driving and leakage when VCC = 0V - safe for hot-plug or partial-power-down scenarios |
| High-speed propagation (3.4 ns max) | Meets timing budgets for DDR SDRAM address latching and FPGA-to-ASIC data bus buffering |
Applications
| Memory Address Buffering | FPGA I/O Expansion |
|---|---|
Use Scenario: Driving address lines for LPDDR2/DDR3 memory controllers where core logic runs at 1.8V but memory interface requires 3.3V-compatible signaling. IC Role / Device Role / Timing Role: Non-inverting 3-state bus buffer providing voltage-tolerant, low-skew address distribution with precise enable timing. Use Value: Eliminates need for discrete level shifters while maintaining <0.5 ns output skew and sub-4 ns propagation delay. | Use Scenario: Extending I/O count of Xilinx Artix-7 or Intel Cyclone V FPGA to interface with multiple peripheral ASICs operating at different voltage domains. IC Role / Device Role / Timing Role: Voltage-domain translator and bus driver enabling bidirectional data routing between 1.8V FPGA banks and 2.5V/3.3V peripherals. Use Value: Provides 3.6V-tolerant inputs/outputs and integrated series termination - reduces BOM count and layout complexity. |
| Low-Power Industrial Controller Bus | Automotive Infotainment Data Hub |
Use Scenario: Isolating and buffering control bus signals (e.g., SPI, parallel config) in battery-powered PLC modules with strict 1.8V/2.5V power architecture. IC Role / Device Role / Timing Role: Low-quiescent-current (20 µA) 3-state buffer enabling selective bus partitioning and power gating. Use Value: Delivers <5 µA off-state leakage and >300 mA latch-up immunity - meets IEC 61000-4-2 and industrial reliability standards. | Use Scenario: Interfacing ADAS camera sensor data streams with central infotainment SoC via parallel LVCMOS bus under automotive temperature range (−40°C to +125°C). IC Role / Device Role / Timing Role: High-reliability bus repeater ensuring signal integrity across long PCB traces in vibration-prone environments. Use Value: Maintains 3.4 ns tPD and <0.5 ns skew across full temp range with HBM >2 kV ESD protection - qualified per AEC-Q100 Class 2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit non-inverting 3-state bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162244ADGGR | Lower VCC min (1.65V), no integrated 26Ω resistors, 3.3V-tolerant only (not 3.6V) | Requires external series termination for noise control; limited to ≤3.3V system interfaces | Select when cost sensitivity outweighs need for built-in termination and extended voltage tolerance |
| 74ALVC162244PW | Wider VCC range (1.65–3.6V), same 3.6V tolerance, but higher ICC (max 40 µA vs. 20 µA) | Higher static power consumption; identical pinout and AC specs, but less suitable for ultra-low-power designs | Choose when legacy ALVC family compatibility is required and quiescent current is not constrained |
Compared with SN74LVC162244ADGGR and 74ALVC162244PW, the 74VCX162244TTR uniquely combines 3.6V I/O tolerance, integrated 26Ω termination, and 20 µA ICC - making it optimal for compact, low-noise, multi-voltage memory and FPGA bus interfaces where component count and signal integrity are prioritized.
Availability
74VCX162244TTR is available at Aetrix Electronics and suitable for memory subsystem design, FPGA I/O expansion, industrial controller bus isolation, and automotive infotainment data routing requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74VCX162244TTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management devices, and discrete components for industrial, automotive, and consumer markets.
The VCX logic family targets low-voltage, high-speed digital interfacing with enhanced noise immunity and mixed-voltage compatibility - specifically engineered for next-generation memory subsystems and FPGA-ASIC interconnects.
FAQ
What is the maximum operating frequency supported by the 74VCX162244TTR?
The device does not specify a maximum clock frequency directly, but its 3.4 ns maximum propagation delay at 3.0–3.6V implies reliable operation up to approximately 200–250 MHz for single-cycle bus transactions. Actual usable frequency depends on system-level factors including trace length, load capacitance, and timing margin requirements - validated through board-level signal integrity analysis.
Can the 74VCX162244TTR be used with a 1.8V supply while interfacing to 3.6V inputs?
Yes - all inputs are 3.6V-tolerant regardless of VCC, allowing safe connection to 3.6V signal sources even when powered from 1.8V. The outputs also swing rail-to-rail (0V to VCC) and tolerate 3.6V on pins in high-impedance state, satisfying mixed-voltage interface requirements without external protection circuitry.
How does the integrated 26Ω series resistor affect signal integrity?
The 26Ω resistor is placed in series with each output, forming a source termination that matches typical PCB trace impedances (50–75Ω) when combined with load capacitance. This reduces overshoot, undershoot, and crosstalk in high-speed parallel buses - verified by dynamic quiet-output measurements showing VOLP ≤ 0.35V and VOHV ≥ 2.65V at 3.3V VCC.
Is the 74VCX162244TTR pin-compatible with standard 74-series 162244 devices?
Yes - it is explicitly designed as pin- and function-compatible with industry-standard 74-series 162244 bus buffers, including identical TSSOP-48 footprint and signal mapping. This enables drop-in replacement in existing designs while upgrading to lower voltage operation, improved speed, and enhanced ESD/latch-up performance without PCB redesign.
74VCX162244TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74VCX
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74VCX162244TTR FAQ
1.How can I place an order for 74VCX162244TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VCX162244TTR 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 74VCX162244TTR reliable?
The price and inventory of 74VCX162244TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX162244TTR is usually 5 days.
3.What payment methods are accepted for 74VCX162244TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX162244TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VCX162244TTR?
74VCX162244TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VCX162244TTR 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 74VCX162244TTR?
For technical support, including 74VCX162244TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX162244TTR requirements.
6.How does Aetrix verify that 74VCX162244TTR is sourced from the original manufacturer or authorized distributors?
All 74VCX162244TTR 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 74VCX162244TTR meets industry standards.
7.What is the process for return or replacement of 74VCX162244TTR?
All 74VCX162244TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX162244TTR, 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 74VCX162244TTR part is unused and in its original packaging.
Return procedure for 74VCX162244TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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