Datasheet Texas Instruments CD74AC646

Manufacturer	Texas Instruments
Series	CD74AC646

Octal Non-Inverting Bus Transceivers/Registers with 3-State Outputs

Datasheets

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PDF, 900 Kb, File published: Dec 3, 1998

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Data sheet acquired from Harris Semiconductor
SCHS293 This data sheet is applicable to the CD74AC646 and CD74ACT646. The CD54AC646, CD54/74AC648, CD54ACT646, and
CD54/74ACT648 were not acquired from Harris Semiconductor. PACKAGE OPTION ADDENDUM www.ti.com 15-Oct-2015 PACKAGING INFORMATION
Orderable Device Status
(1) Package Type Package Pins Package
Drawing
Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (В°C) Device Marking
(4/5) CD74AC646M ACTIVE SOIC DW 24 25 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -55 to 125 AC646M CD74AC646M96 ACTIVE SOIC DW 24 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -55 to 125 AC646M CD74AC646MG4 ACTIVE SOIC DW 24 25 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -55 to 125 AC646M CD74ACT646M ACTIVE SOIC DW 24 25 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -55 to 125 ACT646M CD74ACT646M96 ACTIVE SOIC DW 24 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -55 to 125 ACT646M (1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan -The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) -please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. …

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Status

	CD74AC646M	CD74AC646M96	CD74AC646MG4
Lifecycle Status	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	No	No	No

Packaging

	CD74AC646M	CD74AC646M96	CD74AC646MG4
N	1	2	3
Pin	24	24	24
Package Type	DW	DW	DW
Industry STD Term	SOIC	SOIC	SOIC
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G
Package QTY	25	2000	25
Carrier	TUBE	LARGE T&R	TUBE
Device Marking	AC646M	AC646M	AC646M
Width (mm)	7.5	7.5	7.5
Length (mm)	15.4	15.4	15.4
Thickness (mm)	2.35	2.35	2.35
Pitch (mm)	1.27	1.27	1.27
Max Height (mm)	2.65	2.65	2.65
Mechanical Data	Download	Download	Download

Parametrics

Parameters / Models	CD74AC646M	CD74AC646M96	CD74AC646MG4
Bits	8	8	8
F @ Nom Voltage(Max), Mhz	100	100	100
ICC @ Nom Voltage(Max), mA	0.08	0.08	0.08
Operating Temperature Range, C	-55 to 125	-55 to 125	-55 to 125
Output Drive (IOL/IOH)(Max), mA	-24/24	-24/24	-24/24
Package Group	SOIC	SOIC	SOIC
Package Size: mm2:W x L, PKG	24SOIC: 160 mm2: 10.3 x 15.5(SOIC)	24SOIC: 160 mm2: 10.3 x 15.5(SOIC)	24SOIC: 160 mm2: 10.3 x 15.5(SOIC)
Rating	Catalog	Catalog	Catalog
Schmitt Trigger	No	No	No
Technology Family	AC	AC	AC
VCC(Max), V	5.5	5.5	5.5
VCC(Min), V	1.5	1.5	1.5
Voltage(Nom), V	1.5,3.3,5	1.5,3.3,5	1.5,3.3,5
tpd @ Nom Voltage(Max), ns	154,17.1,12.3	154,17.1,12.3	154,17.1,12.3

Eco Plan

	CD74AC646M	CD74AC646M96	CD74AC646MG4
RoHS	Compliant	Compliant	Compliant

Application Notes

Download
Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc
PDF, 43 Kb, File published: Apr 1, 1996
Though low power consumption is a feature of CMOS devices sometimes this feature does not meet a designer?s system power supply constraints. Therefore a partial system power down or multiple Vcc supplies are used to meet the needs of the system. This document shows electrostatic discharge protection circuits. It also provides circuit and bus driver examples of partial system power down and curren

Model Line

Series: CD74AC646 (3)

CD74AC646M CD74AC646M96 CD74AC646MG4

Manufacturer's Classification

Semiconductors> Logic> Buffer/Driver/Transceiver> Registered Transceiver