My Inquiry
My Account
onsemi 74ABT16541CSSCX
- Part No.:
- 74ABT16541CSSCX
- Manufacturer:
- onsemi
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ABT16541CSSCX.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ABT16541CSSCX from Fairchild Semiconductor is a 16-bit non-inverting buffer/line driver with independent 3-STATE outputs, designed for memory and address bus driving, clock distribution, and bidirectional bus transmission. It features byte-level control (OE1/OE2), ±32 mA output drive (32 mA source / 64 mA sink), 4.5–5.5 V supply operation, and guaranteed simultaneous switching noise immunity.
For engineers reviewing the 74ABT16541CSSCX datasheet, pinout, applications, or equivalent options, key selection criteria include 3-STATE timing (tPZH ≤ 5.2 ns), output drive strength (IOL = 64 mA), dual-nibble enable architecture, and SSOP-48 package compatibility with JEDEC MO-118.
Technical Context
The 74ABT16541CSSCX implements two independent 8-bit buffer sections, each controlled by dedicated active-low OE inputs (OE1 for I0–I7/O0–O7; OE2 for I8–I15/O8–O15). Its ABT logic family delivers TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) and rail-to-rail output swing under load.
It guarantees latchup protection per JEDEC JESD78, supports hot insertion without damage, and maintains high-impedance glitch-free bus loading across full power-up/down cycles. Propagation delays are specified at CL = 50 pF (tPLH/tPHL ≤ 3.9 ns) and skew is bounded (tOST ≤ 2.0 ns).
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 | 32 mA source / 64 mA sink - Supports heavy capacitive loads and fanout to multiple CMOS/TTL inputs. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns @ CL = 50 pF - Enables reliable operation in high-speed address/data buses up to 100 MHz toggle rate. |
| 3-STATE Enable Time | tPZH ≤ 5.2 ns - Minimizes bus contention window during direction switching in transceiver applications. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - Matches standard TTL logic levels for seamless interfacing with legacy controllers. |
| Pin-to-Pin Skew | tOST ≤ 2.0 ns - Maintains signal integrity across all 16 outputs in parallel bus systems. |
| Operating Temperature | –40 °C to +85 °C - Qualified for industrial-grade embedded and computing environments. |
Pinout & Package
74ABT16541CSSCX is housed in a 48-lead Small Shrink Outline Package (SSOP), JEDEC MO-118 compliant, 0.300" wide, with 0.025" pitch. Package number: MS48A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 | I0–I15 Inputs | Non-inverting data inputs; accept TTL-compatible logic levels (0.8 V / 2.0 V thresholds). |
| 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 | O0–O15 Outputs | 3-STATE buffered outputs; drive up to 64 mA low / 32 mA high into bus loads. |
| 33, 34 | OE1, OE2 | Active-low byte enables - OE1 controls O0–O7; OE2 controls O8–O15; independent or paralleled for 16-bit control. |
| 35, 48 | VCC, GND | Power and ground pins - decoupling required near pin 35 (VCC) to suppress simultaneous switching noise. |
| 47 | GND | Secondary ground pin - improves thermal dissipation and reduces ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Byte-wise 3-STATE control | Independent OE1/OE2 pins allow selective enabling of upper/lower 8-bit bus segments without external logic. |
| High-current output drive | 64 mA sink capability ensures robust LOW-level signaling across long PCB traces or multi-drop buses. |
| Hot-insertion tolerance | Non-destructive operation during live board insertion - eliminates need for sequencing circuitry in modular backplanes. |
| Glitch-free power cycling | Outputs remain in high-impedance state throughout power-up/down - prevents bus contention during system reset. |
| Latchup immunity | Guaranteed protection per JEDEC JESD78 - withstands transient overvoltage and ESD events in industrial environments. |
Applications
| Memory Address Buffering | PCI Bus Transceiver Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory arrays with >100 pF trace capacitance. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-STATE isolation; provides current gain and timing margin for setup/hold compliance. Use Value: 64 mA sink drive ensures fast LOW transitions on heavily loaded address buses; tPZH ≤ 5.2 ns minimizes enable delay in burst-mode access. | Use Scenario: Bidirectional data buffering between PCI slot and local controller, requiring direction-controlled 3-STATE isolation. IC Role / Device Role / Timing Role: Dual-nibble line driver/receiver; OE1/OE2 synchronized to PCI FRAME# and IRDY# for half-cycle direction control. Use Value: Independent byte enables allow staggered arbitration; tOST ≤ 2.0 ns preserves data eye integrity across all 16 bits. |
| Clock Distribution Network | Industrial Backplane Interconnect |
Use Scenario: Fanout of a 50 MHz system clock to multiple synchronous peripherals (ADCs, FPGAs, ASICs) on a dense PCB. IC Role / Device Role / Timing Role: Low-skew clock buffer; outputs driven in parallel with matched propagation (tPLH/tPHL ≤ 3.9 ns). Use Value: Pin-to-pin skew ≤ 2.0 ns prevents clock domain misalignment; ±32 mA drive sustains edge rate into 50 Ω terminations. | Use Scenario: Hot-pluggable module interface in programmable logic controllers (PLCs), where modules insert while main backplane remains powered. IC Role / Device Role / Timing Role: Bus isolation buffer with non-destructive hot insertion; maintains high-Z state until VCC stabilizes. Use Value: Guaranteed glitch-free power-up behavior prevents spurious writes; latchup immunity withstands connector arcing during mating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16541DGGR | TSSOP-48 package (MTD48); identical AC/DC specs; same OE1/OE2 architecture and drive strength. | No change in logic function or timing; requires PCB footprint revision due to 6.1 mm width vs. 7.5 mm SSOP. | Select when board space constraints favor thinner profile or existing TSSOP assembly infrastructure is used. |
| 74LVT16541MTD | Lower VCC range (2.7–3.6 V); 32 mA drive only; no guaranteed latchup protection; higher VOL at full load. | Not suitable for 5 V systems; limited to 3.3 V bus domains; reduced noise margin in mixed-voltage backplanes. | Choose only for cost-sensitive 3.3 V designs where latchup immunity and 5 V compatibility are not required. |
Compared with SN74ABT16541DGGR and 74LVT16541MTD, the 74ABT16541CSSCX offers verified 5 V operation, industrial temperature range, and JEDEC latchup compliance - making it the preferred choice for legacy 5 V memory subsystems and hot-swap backplanes where reliability under voltage transients is critical.
Availability
74ABT16541CSSCX is available at Aetrix Electronics and suitable for memory address buffering, PCI bus interfacing, and industrial backplane interconnect requiring stable component supply, long-term lifecycle support, and consistent SSOP-48 packaging.
Supply support for 74ABT16541CSSCX 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 U.S.-based semiconductor company specializing in power management, analog, and logic ICs before its acquisition by ON Semiconductor in 2016. Its ABT logic family set industry benchmarks for speed and drive strength in 5 V systems.
The 74ABT16541CSSCX belongs to Fairchild's Advanced BiCMOS Technology (ABT) logic series, engineered specifically for high-speed, high-drive 5 V bus interface applications in computing, industrial control, and telecommunications infrastructure.
FAQ
What is the maximum operating frequency supported by the 74ABT16541CSSCX?
The 74ABT16541CSSCX supports a maximum toggle frequency of 100 MHz under specified conditions (VCC = 4.5–5.5 V, TA = –40 °C to +85 °C, CL = 50 pF). This rating is derived from AC electrical characteristics including tPLH/tPHL ≤ 3.9 ns and tOST ≤ 2.0 ns, ensuring reliable timing margins in high-speed address and data bus applications. The 74ABT16541CSSCX achieves this performance without requiring external termination or biasing networks.
Does the 74ABT16541CSSCX support hot insertion, and what design features enable this?
Yes, the 74ABT16541CSSCX supports non-destructive hot insertion, enabled by internal circuitry that prevents latchup and limits I/O stress during partial power-up. Key features include guaranteed latchup protection per JEDEC JESD78, high-impedance glitch-free behavior across full power cycling, and input/output structures rated for –0.5 V to 7.0 V. These ensure the 74ABT16541CSSCX remains undamaged and electrically benign when inserted into a live 5 V backplane.
How are the OE1 and OE2 pins used in the 74ABT16541CSSCX, and can they be tied together?
The OE1 and OE2 pins on the 74ABT16541CSSCX independently control the 3-STATE outputs for the lower (O0–O7) and upper (O8–O15) bytes. They are active-low and may be shorted together for unified 16-bit operation, or driven separately for nibble-selective bus gating. This flexibility allows the 74ABT16541CSSCX to serve both full-width and segmented bus architectures without external logic, preserving timing integrity and reducing component count.
What is the output voltage swing specification for the 74ABT16541CSSCX at full load?
At full load (IOL = 64 mA), the 74ABT16541CSSCX guarantees VOL ≤ 0.55 V (min) and VOH ≥ 2.0 V (min at IOH = 32 mA) over the full operating temperature and voltage range. These values reflect actual drive capability into real-world bus loads, not just light test conditions. The 74ABT16541CSSCX maintains these levels while delivering simultaneous switching noise immunity - critical for maintaining signal integrity in dense memory subsystems.
Is the 74ABT16541CSSCX pin-compatible with other 16-bit ABT buffers such as the 74ABT16244?
No, the 74ABT16541CSSCX is not pin-compatible with the 74ABT16244. While both are 16-bit ABT buffers, the 74ABT16244 uses inverted outputs and different pin assignments (e.g., OE grouping, power pin locations). The 74ABT16541CSSCX has dedicated OE1/OE2 pins and a specific SSOP-48 layout per package number MS48A. Substitution requires schematic and layout revision - verify against Fairchild DS012149 and the 74ABT16541CSSCX physical dimensions drawing before redesign.
74ABT16541CSSCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ABT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm 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-SSOP
74ABT16541CSSCX FAQ
1.How can I place an order for 74ABT16541CSSCX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT16541CSSCX 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 74ABT16541CSSCX reliable?
The price and inventory of 74ABT16541CSSCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16541CSSCX is usually 5 days.
3.What payment methods are accepted for 74ABT16541CSSCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT16541CSSCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT16541CSSCX?
74ABT16541CSSCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT16541CSSCX 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 74ABT16541CSSCX?
For technical support, including 74ABT16541CSSCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16541CSSCX requirements.
6.How does Aetrix verify that 74ABT16541CSSCX is sourced from the original manufacturer or authorized distributors?
All 74ABT16541CSSCX 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 74ABT16541CSSCX meets industry standards.
7.What is the process for return or replacement of 74ABT16541CSSCX?
All 74ABT16541CSSCX units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16541CSSCX, 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 74ABT16541CSSCX part is unused and in its original packaging.
Return procedure for 74ABT16541CSSCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ABT16541CSSCX 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
