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onsemi 74ABT16541CMTDX
- Part No.:
- 74ABT16541CMTDX
- Manufacturer:
- onsemi
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ABT16541CMTDX.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,252
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Product details
Overview
74ABT16541CMTDX from Fairchild Semiconductor is a 16-bit non-inverting buffer/line driver with dual 8-bit 3-STATE control, designed for memory address driving, clock distribution, and bus transceiver applications. It operates from 4.5 V to 5.5 V, delivers 32 mA output source and 64 mA sink capability, and guarantees simultaneous switching noise immunity across all 16 outputs.
For engineers reviewing the 74ABT16541CMTDX datasheet, pinout, applications, or equivalent options, key selection criteria include byte-level 3-STATE control logic, guaranteed latchup protection, hot-insertion tolerance, high-impedance glitch-free power-up/down behavior, and JEDEC MO-153 TSSOP-48 packaging.
Technical Context
The 74ABT16541CMTDX implements two independent 8-bit buffer sections, each with dedicated active-low OE inputs (OE1/OE2 for lower/upper byte), enabling flexible 8-bit or unified 16-bit bus control. Its ABT logic family ensures TTL-compatible input thresholds and fast propagation delays under 3.9 ns (tPHL, VCC = 4.5–5.5 V, CL = 50 pF).
It features non-destructive hot insertion support, guaranteed dynamic threshold performance, and robust bus loading management during power transitions. Output leakage remains ≤10 µA at VOUT = 0.5 V or 2.7 V, and ICCZ (3-STATE supply current) is limited to 100 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with 5 V TTL and mixed-voltage system interfaces. |
| Output Drive Strength | 32 mA source / 64 mA sink - Supports heavy capacitive loads and fan-out to multiple CMOS/TTL inputs. |
| Propagation Delay | Max 3.9 ns (tPHL, CL = 50 pF) - Enables reliable operation in high-speed address/data buses up to 100 MHz toggle frequency. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - Matches standard TTL logic levels for seamless interfacing without level shifters. |
| 3-STATE Enable Time | tPZH = 5.2 ns max - Minimizes bus contention window during output activation in shared-bus systems. |
| Pin-to-Pin Skew | tOST = 2.0 ns max - Maintains signal integrity across all 16 outputs in parallel timing-critical paths. |
| Operating Temperature | –40 °C to +85 °C - Qualified for industrial-grade embedded and computing applications. |
Pinout & Package
74ABT16541CMTDX is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch. This package supports fine-pitch PCB layouts and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-STATE enable (lower/upper byte) | Independent control allows split-bus operation; shorting enables full 16-bit mode. |
| I0–I15 | Data inputs | Non-inverting inputs accepting TTL-level signals; VIH/VIL defined per JEDEC standards. |
| O0–O15 | Buffered outputs with 3-STATE | Drive external buses directly; high-impedance state prevents contention when disabled. |
| VCC, GND | Power and ground | Dual VCC/GND pairs (pins 1/24/48 and 2/23/47) reduce switching noise and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Byte-wise 3-STATE control | Separate OE1/OE2 pins enable independent 8-bit bus segmentation or synchronized 16-bit operation. |
| Hot-insertion tolerance | Non-destructive operation during live board insertion-no I/O clamp diode damage or latchup risk. |
| Glitch-free power sequencing | Outputs remain high-impedance throughout power-up/down cycles, preventing bus conflicts. |
| Latchup protection | Guaranteed >500 mA latchup immunity per JEDEC JESD78, eliminating need for external current limiting. |
| Simultaneous switching noise control | Specified VOLP/VOLV limits ensure stable LOW-level output voltage even with all 16 outputs switching. |
Applications
| Memory Address Buffering | PCI/ISA Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory in embedded systems. IC Role / Device Role / Timing Role: Non-inverting buffer with controlled 3-STATE output enabling bidirectional address isolation during memory access cycles. Use Value: Eliminates address bus contention during chip select transitions; tPZH/tPLZ specs ensure setup/hold compliance with memory timing windows. |
Use Scenario: Interfacing a 32-bit host processor to legacy 16-bit peripheral cards via ISA or PCI local bus. IC Role / Device Role / Timing Role: Bidirectional line driver/receiver managing data/address strobes with byte-selectable 3-STATE control. Use Value: OE1/OE2 allow independent control of low/high byte lanes, supporting 8-bit or 16-bit data transfers without glue logic. |
| Clock Distribution Network | Industrial Control Backplane |
|
Use Scenario: Fan-out of a single system clock to multiple synchronous peripherals (ADCs, DACs, FPGAs) on a PCB. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring matched edge timing across 16 destinations. Use Value: tOSLH ≤ 1.5 ns and tPV ≤ 2.5 ns guarantee sub-nanosecond skew-critical for jitter-sensitive sampling clocks. |
Use Scenario: Signal conditioning and isolation between PLC CPU modules and distributed I/O racks over long backplane traces. IC Role / Device Role / Timing Role: Robust bus driver handling EMI-prone industrial environments with guaranteed latchup immunity and wide temp range. Use Value: 64 mA sink strength drives unterminated 50 Ω traces; –40 °C to +85 °C rating ensures reliability in factory-floor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16541DGGR | Same ABT logic family, identical pinout, TI-manufactured; tPHL = 4.0 ns (max, CL = 50 pF) vs. 3.9 ns for 74ABT16541CMTDX. | Qualified to TI's enhanced industrial temperature range (–40 °C to +105 °C); slightly higher ICCZ (150 µA). | Preferred where extended temperature margin or TI supply chain alignment is required. |
| 74LVT16541MTD | Lower VCC range (2.7–3.6 V); 32 mA drive only; no guaranteed latchup protection per JESD78. | Designed for 3.3 V systems; unsuitable for 5 V bus interfacing or high-noise industrial use. | Select only for cost-sensitive 3.3 V applications where latchup immunity and hot insertion are not required. |
Compared with SN74ABT16541DGGR and 74LVT16541MTD, the 74ABT16541CMTDX offers the tightest propagation delay spec, full 5 V operation with robust latchup immunity, and proven hot-insertion tolerance-making it optimal for industrial 5 V bus buffering where timing margin and reliability are critical.
Availability
74ABT16541CMTDX is available at Aetrix Electronics and suitable for memory subsystem design, industrial backplane interfacing, and high-reliability clock distribution requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for 74ABT16541CMTDX 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 logic ICs, acquired by ON Semiconductor in 2016; its ABT logic portfolio remains widely deployed in industrial and computing infrastructure.
The 74ABT16541CMTDX belongs to Fairchild's ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed 5 V TTL-compatible bus interface applications demanding low skew, high drive, and rugged power sequencing behavior.
FAQ
What is the maximum operating temperature range for the 74ABT16541CMTDX?
The 74ABT16541CMTDX is rated for ambient operation from –40 °C to +85 °C. This industrial temperature range is validated per the manufacturer's recommended operating conditions and supports deployment in enclosed control cabinets, network equipment, and embedded computing platforms without forced cooling.
Does the 74ABT16541CMTDX support hot insertion without external protection circuitry?
Yes, the 74ABT16541CMTDX features non-destructive hot insertion capability, verified per Fairchild's characterization. Its I/O structure includes integrated protection that prevents latchup or damage when inserted into a live backplane-no series resistors or TVS diodes are required for basic hot-swap operation.
How does the byte-control architecture of the 74ABT16541CMTDX improve bus design flexibility?
The 74ABT16541CMTDX provides separate OE1 and OE2 inputs for lower and upper 8-bit nibbles. This allows independent gating of address/data bytes-enabling 8-bit peripheral interfacing, partial bus isolation during DMA cycles, or combining both enables for full 16-bit operation without redesigning control logic.
What is the significance of the guaranteed simultaneous switching noise specification for the 74ABT16541CMTDX?
The guaranteed simultaneous switching noise level ensures that VOL remains ≤0.55 V and VOH stays ≥2.0 V even when all 16 outputs switch LOW simultaneously into a 64 mA load. This eliminates need for additional decoupling or derating in dense memory or bus applications where multiple drivers activate concurrently.
Is the 74ABT16541CMTDX pin-compatible with other 48-pin TSSOP logic buffers?
The 74ABT16541CMTDX follows JEDEC MO-153 mechanical dimensions and has a standardized 48-pin TSSOP pinout for 16-bit buffers. While functionally compatible with SN74ABT16541DGGR (TI), pin compatibility is confirmed only with that specific alternative-not with unrelated families like LVT or ALVC due to differing OE and power pin assignments.
74ABT16541CMTDX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ABT
- Package/Case:
- 48-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:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ABT16541CMTDX FAQ
1.How can I place an order for 74ABT16541CMTDX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT16541CMTDX 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 74ABT16541CMTDX reliable?
The price and inventory of 74ABT16541CMTDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16541CMTDX is usually 5 days.
3.What payment methods are accepted for 74ABT16541CMTDX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT16541CMTDX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT16541CMTDX?
74ABT16541CMTDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT16541CMTDX 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 74ABT16541CMTDX?
For technical support, including 74ABT16541CMTDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16541CMTDX requirements.
6.How does Aetrix verify that 74ABT16541CMTDX is sourced from the original manufacturer or authorized distributors?
All 74ABT16541CMTDX 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 74ABT16541CMTDX meets industry standards.
7.What is the process for return or replacement of 74ABT16541CMTDX?
All 74ABT16541CMTDX units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16541CMTDX, 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 74ABT16541CMTDX part is unused and in its original packaging.
Return procedure for 74ABT16541CMTDX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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