Octal Bus Transceiver (Open-Drain)

The 74FCT621T is an octal transceiver with non-inverting Open- Drain bus compatible outputs in both send and receive directions. The B bus outputs are capable of sinking 64mA providing very good capacitive drive characteristics. The 74FCT621A is designed for asynchronous two-way communication between data buses. The 74FCT621A operates at -40C to +85C

Features

  • Std. and A speeds
  • Low input and output leakage ?1 uA (max.)
  • CMOS power levels
  • True TTL input and output compatibility: – VOH = 3.3V (typ.) – VOL = 0.3V (typ.)
  • Meets or exceeds JEDEC standard 18 specifications
  • Power off disable outputs permit "live insertion"
  • Available in 20 pin SOIC package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
74FCT621ATSOG Active PSG20 SOIC 20 I Yes Tube Availability
74FCT621ATSOG8 Active PSG20 SOIC 20 I Yes Reel Availability
74FCT621TSOG Active PSG20 SOIC 20 I Yes Tube Availability
74FCT621TSOG8 Active PSG20 SOIC 20 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
74FCT621T Datasheet Datasheet PDF 45 KB Nov 25, 2016
Application Notes & White Papers
AN-154: Estimating Power Dissipation in CMOS Application Note PDF 30 KB May 31, 1996
AN-154: Estimating Power Dissipation in CMOS Application Note PDF 30 KB May 31, 1996
AN-147: The Myth of Ground Bounce Measurements Application Note PDF 143 KB May 31, 1996
AN-152: FCT-T Octal Logic Characteristics... Application Note PDF 158 KB May 31, 1996
PCNs & PDNs
PDN# L-05-04 Selective Logic Products Obsolescence Product Discontinuation Notice PDF 173 KB Apr 26, 2005
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PDN# Logic-00-09: Obsolete PDIP Package Product Discontinuation Notice PDF 73 KB Apr 23, 2001
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB Apr 15, 2002
PCN#A-0504-02R1: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 16 KB Jul 21, 2005
PCN# A-0504-02R2: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 38 KB Aug 3, 2005
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 13, 2004
PCN#: A-0504-02, Transfer assembly facility IDT-Manila to OSE-Ph Product Change Notice PDF 47 KB Apr 28, 2005
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 13, 2012
PCN#: A-0501-01, New m/c DMC-2000 and d/a 8390A for PDIP pkgs Product Change Notice PDF 42 KB Jan 24, 2005
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 10, 2001
PCN# G0005-01, Laser Top Mark Product Change Notice PDF 24 KB May 9, 2000
PCN#:A-0401-01, new m/c G600 & 8290 d/a material Product Change Notice PDF 196 KB Jan 18, 2004
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 9, 2003
PCN#: TB-0504-01, Transfer Test & Backend from IDT-Manila to IDT Product Change Notice PDF 35 KB Apr 28, 2005
PCN# G0202-01, Alternate assembly facility Product Change Notice PDF 16 KB Feb 7, 2002
PCN# L0203-09R1 Tech Upgrade & Fab Transfer Product Change Notice PDF 98 KB May 28, 2003
PCN# : L0808-01 Fab 2 to Fab 4 Transfer on IDT74FCT621 Product Change Notice PDF 85 KB Sep 17, 2008

Software & Tools

Title Other Languages Type Format File Size Date
74FCT621T IBIS Model Model - IBIS ZIP 7 KB Mar 8, 1999
74FCT621T Hspice Model Model - HSPICE ZIP 18 KB Jan 2, 2001