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onsemi 74VCX16827MTD
- Part No.:
- 74VCX16827MTD
- Manufacturer:
- onsemi
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74VCX16827MTD.pdf
- Description:
- IC BUF NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
74VCX16827MTD from Fairchild Semiconductor is a low-voltage 20-bit non-inverting buffer/line driver with byte-level 3-STATE control, 3.6V-tolerant I/O, ±24 mA drive at 3.0V VCC, and 2.5 ns max propagation delay (3.0–3.6V), deployed in memory address buses, clock distribution, and parity bus transceivers.
For engineers reviewing the 74VCX16827MTD datasheet, pinout, applications, or equivalent options, key selection considerations include voltage range compatibility (1.2–3.6V), 3.6V I/O tolerance for mixed-supply interfacing, byte-wise output enable architecture, and TSSOP-56 thermal and layout constraints.
Technical Context
The 74VCX16827MTD implements two independent 10-bit byte sections, each controlled by dual active-low NOR-enable inputs (OE1/OE2 for bits 0–9; OE3/OE4 for bits 10–19), enabling granular 3-STATE output control without cross-byte interference. All inputs and outputs tolerate up to 3.6V regardless of VCC level (1.2–3.6V).
It uses advanced CMOS fabrication for high-speed operation with low static power: ICC ≤ 20 µA typical, power-off high-impedance I/O, and patented noise/EMI reduction circuitry. Latch-up immunity exceeds 300 mA, and ESD withstands >2000V (HBM) and >200V (MM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2V to 3.6V - supports direct interface with 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V logic domains |
| I/O Voltage Tolerance | −0.5V to +3.6V - enables safe connection to higher-voltage peripherals without level shifters |
| tPD Max | 2.5 ns @ 3.3V - ensures sub-400 MHz timing margin for high-speed address/data buffering |
| IOH/IOL Drive | ±24 mA @ 3.0V - drives standard 50Ω transmission lines or multiple CMOS loads without external buffers |
| 3-STATE Leakage | ±10 µA @ 1.2–3.6V - minimizes bus contention current during disable states |
| Power-Off Behavior | High-impedance I/O - prevents back-driving or leakage when VCC = 0V, critical for hot-swap systems |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments without derating |
Pinout & Package
74VCX16827MTD is housed in a 56-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch and exposed thermal pad (not electrically connected). Package number: MTD56.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OEn (OE1–OE4) | Active-Low Byte Enable Inputs | Four independent NOR-type enables: OE1/OE2 control O0–O9; OE3/OE4 control O10–O19 |
| I0–I19 | Buffer Inputs | 20 single-ended CMOS-compatible inputs; 3.6V tolerant, no clamping diodes required |
| O0–O19 | Non-Inverting 3-STATE Outputs | 20 outputs with rail-to-rail swing (0V to VCC) and ±24 mA drive capability |
| VCC, GND | Power Supply Pins | One VCC and one GND per 10-bit byte section (pins 1/28 and 29/56); decoupling required per section |
Key Features
| Feature | Design Value |
|---|---|
| Byte-Controlled 3-STATE Architecture | Independent OE pairs allow selective disabling of 10-bit segments-reduces bus contention and dynamic power in partial-width transfers |
| 3.6V-Tolerant I/O at Any VCC | Eliminates need for external level translators when interfacing with legacy 3.3V or 5V peripherals in low-voltage systems |
| Live Insertion Support | Power-off high-impedance I/O and controlled enable sequencing enable hot-plug capability in modular backplane designs |
| Noise/EMI Reduction Circuitry | Patented slew-rate control minimizes simultaneous switching noise (SSN), easing PCB layout and reducing ground bounce |
| Low Quiescent Current | ICC ≤ 20 µA ensures <1 µW static power per buffer at 1.2V-critical for battery-backed or always-on subsystems |
Applications
| Memory Address Buffering | Low-Voltage Clock Distribution |
|---|---|
|
Use Scenario: Driving 20-bit address lines from a 1.8V microcontroller to a 3.3V SRAM or Flash device with shared data/address bus. IC Role / Device Role / Timing Role: Non-inverting voltage-tolerant buffer providing level-shifted, low-skew address propagation with byte-granular enable control. Use Value: Eliminates discrete level shifters; tOSLH ≤ 0.75 ns ensures address setup integrity across all 20 bits under 3.3V operation. |
Use Scenario: Distributing a 100 MHz system clock from a 2.5V PLL to ten 3.3V peripheral clock inputs on an FPGA carrier board. IC Role / Device Role / Timing Role: Low-jitter, low-skew line driver with matched propagation delay across outputs and controlled edge rates. Use Value: tPHL/tPLH variation ≤ 0.5 ns (skew) maintains clock phase alignment; 3.6V I/O tolerance avoids overvoltage on 3.3V receiver inputs. |
| Parity Bus Transceiver | Hot-Swappable Backplane Interface |
|
Use Scenario: Transmitting 4-bit parity signals alongside a 16-bit data bus between two 1.2V ASICs sharing a common 3.3V backplane stub. IC Role / Device Role / Timing Role: Bidirectional parity line driver/receiver with independent byte enables for parity generation and checking cycles. Use Value: Dual-byte control allows parity-only enable during check phase; ±24 mA drive ensures robust signal integrity over 10 cm FR4 traces. |
Use Scenario: Enabling/disabling I/O connections on a modular PCIe carrier card during live insertion into a powered 3.3V backplane. IC Role / Device Role / Timing Role: Hot-swap interface buffer with power-off high-Z I/O and pull-up–compatible OE pins for controlled power sequencing. Use Value: IOFF ≤ 10 µA at 0V VCC prevents backfeeding; OE tie-high via resistor ensures defined state during ramp-up (per Note 1). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | 16-bit (not 20-bit); 3.3V-only VCC (1.65–3.6V); no 3.6V I/O tolerance; 24 mA drive @ 3.3V | Lacks byte-level enable granularity; requires external logic for 20-bit expansion; unsuitable for 1.2V–1.5V VCC domains | Select only if system operates strictly at 3.3V and 16-bit width suffices; verify I/O voltage limits against host peripherals |
| 74ALVC16827PAG | 20-bit, same pinout; 2.3–3.6V VCC only; 3.6V I/O tolerant; 24 mA drive @ 3.3V; tPD = 2.7 ns max | Not compatible below 2.3V; lacks 1.2V–2.2V operating range; identical byte-control and TSSOP-56 package | Use when VCC ≥ 2.3V and lower static power is not required; drop-in replacement for 74VCX16827MTD in 3.3V-only designs |
Compared with SN74LVC16244ADGGR and 74ALVC16827PAG, the 74VCX16827MTD uniquely supports full 1.2V–3.6V operation with true 3.6V I/O tolerance-enabling single-part compatibility across ultra-low-voltage SoCs and mixed-supply backplanes where others require redesign or additional components.
Availability
74VCX16827MTD is available at Aetrix Electronics and suitable for memory subsystems, low-voltage clock trees, parity bus interfaces, and hot-swappable backplane modules requiring stable component supply across industrial temperature and multi-voltage design cycles.
Supply support for 74VCX16827MTD 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
Fairchild Semiconductor was a leading designer of high-performance analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its VCX logic family emphasized ultra-low-voltage operation with robust I/O tolerance.
The 74VCX16827MTD belongs to Fairchild's VCX low-voltage logic series, engineered specifically for portable, battery-powered, and multi-rail embedded systems needing 1.2V–3.6V interoperability without sacrificing speed or drive strength.
FAQ
What voltage ranges does the 74VCX16827MTD support for VCC and I/O?
The 74VCX16827MTD operates with VCC from 1.2V to 3.6V and supports input/output voltages from −0.5V to +3.6V regardless of VCC level. This allows direct interfacing with 3.3V peripherals while powered from 1.2V, 1.5V, 1.8V, 2.5V, or 3.3V supplies-no level shifters required. The 74VCX16827MTD's absolute maximum ratings confirm safe operation up to 4.6V on I/O pins, but functional tolerance is specified to 3.6V.
How is the 3-STATE output control structured on the 74VCX16827MTD?
The 74VCX16827MTD features four active-low output enable inputs: OE1 and OE2 jointly control outputs O0–O9, while OE3 and OE4 jointly control O10–O19. Each pair functions as a NOR gate-both must be LOW for the corresponding 10-bit segment to drive; either HIGH places those outputs in high-impedance. This byte-level control enables partial bus isolation without affecting other segments, and OE pins tolerate 3.6V even at 1.2V VCC.
Does the 74VCX16827MTD support live insertion or hot-swap applications?
Yes-the 74VCX16827MTD supports live insertion per manufacturer Note 1: its inputs and outputs enter high-impedance when VCC = 0V (power-off leakage ≤10 µA), and OE pins can be tied to VCC via a pull-up resistor to ensure defined states during power-up/down sequencing. This behavior, combined with 3.6V-tolerant I/O, makes the 74VCX16827MTD suitable for modular backplane and hot-plug card applications where undervoltage or unpowered conditions occur.
What is the maximum propagation delay and output skew for the 74VCX16827MTD?
At VCC = 3.3V ± 0.3V, the 74VCX16827MTD guarantees tPHL/tPLH ≤ 2.5 ns (CL = 30 pF, RL = 500Ω), and output-to-output skew tOSLH/tOSHL ≤ 0.5 ns under the same conditions. Skew is measured between any two outputs switching in the same direction, ensuring tight timing correlation across all 20 bits-critical for address and clock distribution where phase alignment affects setup/hold margins.
Can the 74VCX16827MTD drive standard 50Ω transmission lines directly?
Yes-the 74VCX16827MTD delivers ±24 mA output drive at 3.0V VCC, sufficient to drive 50Ω terminated lines (requiring ~20 mA for 1V swing) with margin. Its VOL ≤ 0.55V and VOH ≥ 2.2V at 24 mA load meet standard LVCMOS thresholds, and patented noise/EMI reduction circuitry controls edge rates to minimize reflections and crosstalk. For longer traces or tighter impedance control, series termination remains recommended-but no external buffer is needed.
74VCX16827MTD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VCX
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- 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:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74VCX16827MTD FAQ
1.How can I place an order for 74VCX16827MTD through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VCX16827MTD 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 74VCX16827MTD reliable?
The price and inventory of 74VCX16827MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VCX16827MTD is usually 5 days.
3.What payment methods are accepted for 74VCX16827MTD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VCX16827MTD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VCX16827MTD?
74VCX16827MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VCX16827MTD 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 74VCX16827MTD?
For technical support, including 74VCX16827MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VCX16827MTD requirements.
6.How does Aetrix verify that 74VCX16827MTD is sourced from the original manufacturer or authorized distributors?
All 74VCX16827MTD 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 74VCX16827MTD meets industry standards.
7.What is the process for return or replacement of 74VCX16827MTD?
All 74VCX16827MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74VCX16827MTD, 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 74VCX16827MTD part is unused and in its original packaging.
Return procedure for 74VCX16827MTD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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