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Renesas IDT74FCT16543ETPAG8
- Part No.:
- IDT74FCT16543ETPAG8
- Manufacturer:
- Renesas
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
IDT74FCT16543ETPAG8.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
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Product details
Overview
IDT74FCT16543ETPAG8 from Renesas Electronics is a 16-bit latched transceiver in TSSOP-56 package, operating at 5V ±10%, with industrial temperature range (–40°C to +85°C), 64mA sink drive, and <250ps output skew - used for bidirectional data flow control between microprocessor buses and backplane interfaces.
For engineers reviewing the IDT74FCT16543ETPAG8 datasheet, IDT74FCT16543ETPAG8 pinout, IDT74FCT16543ETPAG8 application, or IDT74FCT16543ETPAG8 equivalent, key selection criteria include latch-enable timing (tW = 4ns min), output disable time (tPZL = 7.5ns max), live-insertion support via power-off disable outputs, and dual 8-bit independent channel control.
Technical Context
The IDT74FCT16543ETPAG8 implements two independent 8-bit D-type latched transceivers with separate A-to-B and B-to-A control paths (xCEAB/xLEAB/xOEAB and xCEBA/xLEBA/xOEBA), enabling simultaneous or asymmetric bidirectional data latching and 3-state output control. Its flow-through pin layout minimizes PCB routing complexity.
Designed using 0.5µm CMOS technology, it delivers high-speed performance (tPLH/tPHL ≤ 5.6ns at VCC = 5V) with low power consumption (ICCL ≤ 500µA), hysteresis-equipped inputs for noise immunity, and robust DC electrical specs including VIH ≥ 2.0V and VIL ≤ 0.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5.0V ±10% - compatible with standard TTL/CMOS logic rails; no level-shifting required in 5V systems. |
| Output Drive | –32mA IOH / 64mA IOL - sufficient to drive heavy capacitive loads (e.g., backplanes, multi-drop buses) without external buffers. |
| tPLH / tPHL | ≤5.6ns (74FCT16543CT speed grade) - enables high-throughput data transfer in fast synchronous bus architectures. |
| tSK(o) | <250ps - ensures tight timing alignment across all 16 outputs, critical for parallel data integrity in clocked systems. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including factory automation, motor control, and embedded instrumentation. |
| Input Leakage | ≤±1µA max - prevents signal corruption during hot-swap events and supports reliable "live insertion" operation. |
| Power-Off Disable | Outputs enter high-Z when VCC = 0V - eliminates bus contention during board insertion/removal in modular chassis systems. |
Pinout & Package
TSSOP-56 (Package Code: PAG56), 0.5mm pitch, 12.5mm × 6.1mm body size, exposed pad not present, RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B1–1B8, 2B1–2B8 | B-side I/O terminals (bidirectional) | When enabled via xOEBA/xOEAB, serve as inputs (B→A) or outputs (A→B); 3-state capable. |
| 1A1–1A8, 2A1–2A8 | A-side I/O terminals (bidirectional) | Functionally symmetric to B-side; support independent latching and direction control per 8-bit group. |
| xCEAB, xCEBA | Channel Enable (active LOW) | Must be LOW to allow data flow; HIGH disables both latch and output functions for that direction. |
| xLEAB, xLEBA | Latch Enable (active LOW) | LOW = transparent mode; rising edge stores data - defines precise capture point for synchronous bus interfacing. |
| xOEAB, xOEBA | Output Enable (active LOW) | Controls 3-state output drivers only; does not affect latch state - enables independent output gating. |
| VCC (Pins 6, 14, 22, 30, 39, 47) | Power supply | Multiple distributed VCC pins reduce IR drop and improve noise immunity on wide buses. |
| GND (Pins 3, 11, 19, 27, 35, 43, 51, 53) | Ground reference | Eight GND pins provide low-inductance return paths essential for clean switching of 16 high-drive outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit channels | Enables concurrent A↔B and B↔A data transfers with separate control logic - eliminates arbitration overhead in full-duplex bus bridges. |
| Power-off high-Z outputs | Guarantees safe "live insertion" into powered backplanes without bus contention or damage risk - critical for modular industrial controllers. |
| Hysteresis on all inputs | 100mV typical hysteresis improves noise margin against EMI in electrically noisy factory environments (e.g., near VFDs or solenoids). |
| Flow-through pinout | Input and output pins aligned across package edges - simplifies layer stack-up and reduces trace length mismatch in high-speed parallel routing. |
| Low ground bounce (VOLP < 1.0V) | Maintains signal integrity during simultaneous switching of multiple outputs - avoids false triggering in downstream logic. |
Applications
| Industrial Backplane Interface | Microprocessor Bus Extender |
|---|---|
|
Use Scenario: Connecting a CPU local bus to a multi-slot industrial backplane carrying I/O modules, motion controllers, and analog input cards. IC Role / Device Role / Timing Role: Bidirectional latched transceiver providing isolated, timing-controlled data handoff between master and peripheral slots. Use Value: Enables deterministic read/write cycles with tSU/tH = 2ns and tW = 4ns latch window - ensuring setup/hold compliance across variable trace lengths. |
Use Scenario: Extending an 80C51 or similar microcontroller's 16-bit address/data multiplexed bus to off-chip peripherals (e.g., SRAM, FPGA configuration memory). IC Role / Device Role / Timing Role: Latched transceiver decoupling address latching (ALE-driven) from data transfer, supporting non-multiplexed bus expansion. Use Value: 64mA drive strength drives long traces and multiple loads; power-off disable prevents bus conflicts during reset or firmware update. |
| Hot-Swappable Module Controller | Legacy System Bus Bridge |
|
Use Scenario: Embedded controller board designed for hot-plug insertion into a powered rack system with shared VME or CompactPCI-style backplane. IC Role / Device Role / Timing Role: Isolation and direction-controlled interface managing data exchange between module-local logic and shared backplane signals. Use Value: Power-off disable outputs guarantee zero current injection into live backplane lines - meeting IEC 61000-4-2 Level 4 ESD survivability requirements. |
Use Scenario: Interfacing a modern FPGA-based subsystem to legacy ISA or PC/104 bus architecture requiring 5V-tolerant, high-drive transceivers. IC Role / Device Role / Timing Role: Protocol-transparent physical layer translator handling voltage-level, drive strength, and timing alignment between dissimilar buses. Use Value: 5V supply compatibility and VIH/VIL thresholds match TTL/LS logic families; tPLH/tPHL ≤ 5.6ns meets ISA timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit latched transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74FCT16543ATPAG8 | Same pinout and function; faster propagation delay (tPLH/tPHL ≤ 5.1ns vs. ≤ 5.6ns for E-grade). | Preferred where tighter timing margins are required (e.g., >20MHz bus clocks). | Select IDT74FCT16543ETPAG8 for cost-sensitive industrial designs where 5.6ns delay is acceptable. |
| SN74ALVTH16543DGGR | 3.3V-only supply (1.65–3.6V), different pinout, no power-off disable; higher speed (tPD ≤ 3.2ns) but lower drive (–24mA/24mA). | Suitable for mixed-voltage 3.3V systems; not interchangeable without level-shifting or PCB redesign. | Choose SN74ALVTH16543DGGR only for new 3.3V designs; IDT74FCT16543ETPAG8 remains optimal for existing 5V infrastructure. |
Compared with 74FCT16543ATPAG8, the IDT74FCT16543ETPAG8 trades 0.5ns timing margin for broader availability and lower unit cost; versus SN74ALVTH16543DGGR, it maintains 5V compatibility and live-insertion capability at the expense of voltage flexibility.
Availability
IDT74FCT16543ETPAG8 is available at Aetrix Electronics and suitable for industrial backplane interfaces, microprocessor bus extension, and hot-swappable module controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for IDT74FCT16543ETPAG8 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and infrastructure markets.
IDT74FCT16543ETPAG8 belongs to the FCT family of 5V high-drive CMOS logic devices, engineered for robustness in industrial bus interfacing, backplane driving, and hot-plug-capable system architectures.
FAQ
What is the maximum clock frequency supported by IDT74FCT16543ETPAG8?
IDT74FCT16543ETPAG8 is not a clocked device and has no internal clock - it operates asynchronously. Its timing is governed by input control edges (e.g., xLEAB rise time) and propagation delays (tPLH/tPHL ≤ 5.6ns). For reliable operation with a 20MHz bus, setup/hold times (tSU/tH = 2ns) and pulse width (tW = 4ns) must be met by the system controller driving xLEAB/xOEAB.
Does IDT74FCT16543ETPAG8 support 3.3V logic inputs?
IDT74FCT16543ETPAG8 is a 5V-only device with VIH ≥ 2.0V and VIL ≤ 0.8V, making it compatible with 3.3V CMOS outputs (which typically swing to 3.3V/0V) without level shifters. However, its VCC must be 5.0V ±10%; applying 3.3V to VCC will cause functional failure or damage.
Can IDT74FCT16543ETPAG8 be used in place of IDT74FCT16543ATPAG8?
Yes - IDT74FCT16543ETPAG8 is pin-compatible and functionally identical to IDT74FCT16543ATPAG8, differing only in speed grade (E-grade tPLH/tPHL ≤ 5.6ns vs. A-grade ≤ 5.1ns). It may be substituted where the slightly relaxed timing margin is acceptable, such as in systems with longer trace delays or lower bus frequencies.
What is the purpose of the multiple VCC and GND pins on IDT74FCT16543ETPAG8?
IDT74FCT16543ETPAG8 features six VCC and eight GND pins distributed across the TSSOP-56 package to minimize power delivery impedance and reduce simultaneous switching noise. This layout ensures stable voltage under high-current 64mA output transitions and maintains signal integrity across all 16 bits during burst-mode operation.
Is IDT74FCT16543ETPAG8 suitable for hot-swap applications?
Yes - IDT74FCT16543ETPAG8 supports live insertion via power-off disable: when VCC = 0V, all outputs enter high-impedance state (IOFF ≤ ±1µA), preventing bus contention or backfeeding. This feature is explicitly validated in the datasheet and makes IDT74FCT16543ETPAG8 ideal for modular industrial chassis with hot-pluggable boards.
IDT74FCT16543ETPAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, 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:
- 56-TSSOP
IDT74FCT16543ETPAG8 FAQ
1.How can I place an order for IDT74FCT16543ETPAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT74FCT16543ETPAG8 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 IDT74FCT16543ETPAG8 reliable?
The price and inventory of IDT74FCT16543ETPAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT74FCT16543ETPAG8 is usually 5 days.
3.What payment methods are accepted for IDT74FCT16543ETPAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT74FCT16543ETPAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT74FCT16543ETPAG8?
IDT74FCT16543ETPAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT74FCT16543ETPAG8 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 IDT74FCT16543ETPAG8?
For technical support, including IDT74FCT16543ETPAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT74FCT16543ETPAG8 requirements.
6.How does Aetrix verify that IDT74FCT16543ETPAG8 is sourced from the original manufacturer or authorized distributors?
All IDT74FCT16543ETPAG8 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 IDT74FCT16543ETPAG8 meets industry standards.
7.What is the process for return or replacement of IDT74FCT16543ETPAG8?
All IDT74FCT16543ETPAG8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT74FCT16543ETPAG8, 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 IDT74FCT16543ETPAG8 part is unused and in its original packaging.
Return procedure for IDT74FCT16543ETPAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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