ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC COMPARATOR IDENTITY 8B 20QSOP
- Series：74FCT
- Mfr：Renesas Electronics Corporation
- Package：Tube
- Type：Identity Comparator
- Number of Bits：8
- Output：Active Low
- Output Function：A=B
- Voltage - Supply：4.75V ~ 5.25V
- Current - Output High, Low：15mA, 48mA
- Max Propagation Delay @ V, Max CL：4.5ns @ 5V, 50pF
- Current - Quiescent (Iq)：10 µA
- Operating Temperature：-40°C ~ 85°C
- Package / Case：20-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：20-QSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
Download product information
Overview
The Renesas Electronics Corporation 74FCT521CTQG is an 8-bit identity comparator within the 74FCT logic family. It compares two 8-bit words and asserts a low output when inputs match bit-for-bit. The device operates on a single 5V supply (4.75V to 5.25V) with a maximum propagation delay of 7.2ns at 50pF load. It features active-low outputs and is housed in a 20-pin QSOP package, supporting surface mount installation across a -40°C to +85°C temperature range.
Feature Summary
- Performs parallel comparison of two 8-bit data words
- Provides active-low output signal upon exact bit-match detection
- Supports high-speed digital logic operations with nanosecond-scale response times
Applications
- Digital system address matching
- Data integrity verification circuits
- Parallel bus monitoring systems
Procurement Notes
Verify the specific suffix 'CT' against official Renesas documentation to confirm it denotes the commercial temperature grade variant (-40°C to +85°C). Ensure the QSOP-20 package dimensions align with your PCB footprint requirements. Cross-reference the manufacturer part number IDT74FCT521CTQG for accurate sourcing and datasheet retrieval.
Selection Notes
Select this component when precise equality checking of two 8-bit digital signals is required without external logic gates. The 74FCT technology offers faster switching speeds compared to standard TTL or CMOS equivalents. Ensure the design environment supports the specified 5V logic levels and that the QSOP-20 package fits the available board space constraints.
Part Context
This part belongs to the 74FCT series of Fast CMOS logic devices manufactured by Renesas Electronics (formerly IDT). These components are designed for high-performance digital applications requiring fast propagation delays and compatibility with both TTL and CMOS input/output standards. The 74FCT521 specifically addresses the need for dedicated hardware-based data comparison functions.
Replacement Considerations
The IDT74FCT521ATQG is a verified substitute offering identical functionality in a QSOP-20 package. Verify pinout compatibility and electrical specifications before substitution.
