My Inquiry
My Account
Renesas IDT74FCT823CTSOG
- Part No.:
- IDT74FCT823CTSOG
- Manufacturer:
- Renesas
- Category:
- Flip Flops
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
IDT74FCT823CTSOG.pdf
- Description:
- IC FF D-TYPE SNGL 9BIT 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,929
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT74FCT823CTSOG from Renesas Electronics (formerly IDT) is a 9-bit high-performance CMOS bus interface register with Clock Enable (EN), asynchronous Clear (CLR), and 3-state outputs (Y0–Y8). It features true TTL-compatible I/O (VOH = 3.3V typ., VOL = 0.3V typ.), high drive capability (–15mA IOH / 48mA IOL), and industrial temperature operation (–40°C to +85°C). It is used in parity bus interfacing for microprogrammed systems requiring wide data path buffering.
For engineers reviewing the IDT74FCT823CTSOG datasheet, IDT74FCT823CTSOG pinout, IDT74FCT823CTSOG application, or IDT74FCT823CTSOG equivalent, key selection considerations include its 9-bit synchronous register architecture with independent output enable, low input/output leakage (≤1µA), JEDEC 18 compliance, and SOIC-Green (SOG) package compatibility.
Technical Context
The IDT74FCT823CTSOG implements a synchronous 9-bit D-type register with dual control paths: asynchronous CLR resets all Qx outputs to LOW regardless of clock, while EN gates CP-triggered data latching. All inputs include clamp diodes; outputs exhibit low-capacitance bus loading (COUT ≤12pF) in both active and high-impedance states.
Its timing architecture supports fast propagation (tPLH/tPHL ≤6ns for CT grade), tight setup/hold (tSU = 3ns, tH = 1.5ns), and rapid output enable/disable (tPZH ≤7ns, tPHZ ≤6ns). The device operates at VCC = 5.0V ±5% and meets JEDEC standard 18 for TTL compatibility and AC/DC performance across industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5.0V ±5% - ensures stable operation in legacy 5V TTL/CMOS mixed-signal systems |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Output Drive | –15mA IOH / 48mA IOL - drives heavy capacitive loads (e.g., >50pF buses) without signal degradation |
| Input Leakage | ≤1µA max - minimizes standby current in power-sensitive applications and enables live insertion |
| Propagation Delay | tPLH/tPHL ≤6ns (CT grade, CL=50pF) - supports >100MHz system clock domains with margin |
| Input Compatibility | TTL-level VIH ≥2.0V, VIL ≤0.8V - interoperates directly with standard 5V TTL logic without level shifters |
| Output Disable Time | tPHZ ≤6ns - enables fast bus turnaround in time-multiplexed shared-bus architectures |
Pinout & Package
Package: 24-pin SOIC-Green (SOG), 300 mil body width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Inputs | Synchronous parallel data inputs latched on CP rising edge when EN = LOW |
| Q0–Q8 | Register Outputs | Internal registered outputs feeding Y0–Y8; not externally accessible |
| Y0–Y8 | 3-State Outputs | Buffered, tri-stateable outputs controlled by OE; high-Z when OE = HIGH |
| CP | Master Clock | Rising-edge-triggered clock; samples Dx and updates Qx only if EN = LOW |
| EN | Clock Enable | Asynchronous gate for CP; holds Qx/Yx state when EN = HIGH |
| CLR | Asynchronous Clear | Active-LOW reset forcing all Yx to LOW regardless of CP or EN state |
| OE | Output Enable | Active-LOW control for Yx 3-state output drivers; enables bus sharing |
| VCC, GND | Power Rails | Single 5V supply; decoupling required per JEDEC 18 layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| True TTL I/O Compatibility | VOH = 3.3V (typ.) and VOL = 0.3V (typ.) at 5V allow direct interconnection with legacy TTL devices without level translation |
| Live Insertion Support | Power-off disable outputs (IOFF ≤±1µA at VCC = 0V) prevent back-driving during hot-swap operations |
| Low-Capacitance Bus Loading | CIN ≤10pF and COUT ≤12pF reduce signal integrity impact on shared address/data buses |
| Industrial Temperature Range | Specified performance over –40°C to +85°C enables use in factory automation, telecom line cards, and base station control modules |
| JEDEC 18 Compliance | Fully meets voltage thresholds, timing margins, and AC/DC electrical requirements for interoperability in standardized 5V systems |
Applications
| Parity Bus Interface | Microprogrammed Control Unit |
|---|---|
Use Scenario: Adding 9-bit parity generation and checking to a 32-bit data bus in a high-speed microcoded controller. IC Role / Device Role / Timing Role: IDT74FCT823CTSOG acts as a buffered parity register, latching parity bits synchronously with the main data path clock and enabling/disabling them onto the bus via OE. Use Value: Enables deterministic timing alignment between parity and data signals, reducing setup/hold violations in wide-bus microarchitectures. | Use Scenario: Expanding register file width in an industrial PLC sequencer using discrete TTL/CMOS logic. IC Role / Device Role / Timing Role: IDT74FCT823CTSOG serves as a 9-bit synchronous latch for microinstruction fields, driven by the sequencer's phase clock and gated by microcode enable signals. Use Value: Provides deterministic, low-skew register staging with minimal added propagation delay (≤6ns), preserving critical timing margins in multi-cycle microinstructions. |
| Shared System Bus Buffering | Legacy Backplane Interfacing |
Use Scenario: Isolating and driving multiple peripheral modules from a common 8-bit control bus in a modular test instrument rack. IC Role / Device Role / Timing Role: IDT74FCT823CTSOG functions as a bi-directional bus buffer with independent OE control, allowing time-multiplexed access to peripherals without contention. Use Value: Its fast output disable (tPHZ ≤6ns) and high drive strength (48mA IOL) ensure clean bus release and robust signal integrity across long PCB traces. | Use Scenario: Adapting modern FPGA-based controllers to legacy VMEbus or Multibus-II backplanes requiring 5V TTL signaling and precise timing. IC Role / Device Role / Timing Role: IDT74FCT823CTSOG provides level-consistent, jitter-tolerant register staging between FPGA I/O banks and backplane transceivers. Use Value: Guaranteed JEDEC 18 compliance and sub-10ns propagation ensure reliable handshaking with legacy bus controllers operating at 10–20MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus interface register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74FCT823CTSO | Same functional spec and timing (CT grade), but non-green SOIC package (lead finish not RoHS-compliant) | Acceptable where RoHS exemption applies; otherwise not suitable for new designs targeting EU/China RoHS | Select only if legacy board rework requires identical footprint and non-RoHS compliance is authorized |
| SN74FCT823CTSO | Identical logic function and pinout; TI version with same DC/AC specs but different thermal resistance and qualification testing | Valid for drop-in replacement in existing TI-design boards; may require revalidation for extended temperature or reliability-critical deployments | Prefer for TI-centric BOMs; verify thermal derating and life-test data match system requirements |
Compared with IDT74FCT823CTSOG, the 74FCT823CTSO lacks RoHS compliance and may face supply chain restrictions, while SN74FCT823CTSO offers identical functionality but requires validation of thermal performance and long-term reliability under industrial conditions.
Availability
IDT74FCT823CTSOG is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure modules, and legacy bus interface designs requiring stable component supply, RoHS-compliant packaging, and guaranteed industrial temperature operation.
Supply support for IDT74FCT823CTSOG 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 delivering trusted embedded solutions, including microcontrollers, analog, power, and timing products, with roots in IDT's high-performance interface and memory technologies.
The IDT74FCT823CTSOG belongs to the FCT823T series of high-drive, low-skew bus interface registers designed specifically for parity bus expansion and wide-data-path buffering in 5V industrial and telecom systems.
FAQ
What is the maximum clock frequency supported by the IDT74FCT823CTSOG?
The IDT74FCT823CTSOG does not specify a maximum clock frequency in its datasheet; instead, it guarantees timing parameters such as tW (minimum clock pulse width) of 6ns and tSU/tH of 3ns/1.5ns. These values support reliable operation at clock frequencies up to approximately 83MHz (1/12ns period), assuming proper load and layout. Actual usable frequency depends on system-level timing margins, PCB trace length, and capacitive loading.
Does the IDT74FCT823CTSOG support live insertion into a powered-backplane system?
Yes, the IDT74FCT823CTSOG supports live insertion due to its power-off disable outputs feature. When VCC = 0V, input/output power-off leakage (IOFF) is limited to ±1µA, preventing back-driving of live bus lines. This behavior is explicitly confirmed in the Absolute Maximum Ratings and DC Electrical Characteristics sections of the official datasheet.
What is the function of the CLR pin on the IDT74FCT823CTSOG?
The CLR (Clear) pin on the IDT74FCT823CTSOG is an asynchronous active-LOW input that forces all Yx outputs to LOW immediately, independent of CP, EN, or OE state. As shown in the Function Table, when CLR = LOW and OE = LOW, Yx = LOW; this provides hardware-level reset capability for parity or control bus lines without requiring clock synchronization.
Is the IDT74FCT823CTSOG pin-compatible with the 74FCT823AT variant?
Yes, the IDT74FCT823CTSOG is pin-compatible with the IDT74FCT823AT variant - both share identical 24-pin SOIC-Green pinout, terminal assignments, and functional block diagram. The primary difference lies in speed grade: CT grade has faster timing (e.g., tPLH/tPHL ≤6ns vs. ≤10ns for AT), but pin mapping, power, and logic behavior are identical.
What package type does IDT74FCT823CTSOG use, and what are its key mechanical dimensions?
IDT74FCT823CTSOG uses a 24-pin Small Outline IC Green (SOG) package: 300 mil body width, 1.27mm pitch, RoHS-compliant matte tin lead finish. Its JEDEC MS-013AC footprint matches standard SOIC-24 land patterns, enabling drop-in replacement in existing 5V board designs without layout modification.
IDT74FCT823CTSOG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 9
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- 12.5ns @ 5V, 300pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 15mA, 48mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 1 mA
- Input Capacitance:
- 6 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
IDT74FCT823CTSOG FAQ
1.How can I place an order for IDT74FCT823CTSOG through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT74FCT823CTSOG 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 IDT74FCT823CTSOG reliable?
The price and inventory of IDT74FCT823CTSOG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT74FCT823CTSOG is usually 5 days.
3.What payment methods are accepted for IDT74FCT823CTSOG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT74FCT823CTSOG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT74FCT823CTSOG?
IDT74FCT823CTSOG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT74FCT823CTSOG 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 IDT74FCT823CTSOG?
For technical support, including IDT74FCT823CTSOG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT74FCT823CTSOG requirements.
6.How does Aetrix verify that IDT74FCT823CTSOG is sourced from the original manufacturer or authorized distributors?
All IDT74FCT823CTSOG 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 IDT74FCT823CTSOG meets industry standards.
7.What is the process for return or replacement of IDT74FCT823CTSOG?
All IDT74FCT823CTSOG units undergo pre-shipment inspection (PSI). If there is an issue with IDT74FCT823CTSOG, 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 IDT74FCT823CTSOG part is unused and in its original packaging.
Return procedure for IDT74FCT823CTSOG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT74FCT823CTSOG Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
