© Semiconductor Components Industries, LLC, 2006

March, 2006 − Rev. 6

1

Publication Order Number:

MC74AC652/D

MC74AC652, MC74ACT652

Octal Transceiver/Register

with 3−State Outputs

(Non−Inverting)

The MC74AC/ACT652 consists of registered bus transceiver

circuits, with outputs, D−type flip−flops and control circuitry

providing multiplexed transmission of data directly from the input bus

or from the internal storage registers. Data on the A or B bus will be

loaded into the respective registers on the LOW−to−HIGH transition

of the appropriate clock pin (CAB or CBA). The four fundamental

data handling functions available are illustrated in Figures 1 to 4.

apply to both standard and Pb−free devices. Please see our website at

www.onsemi.com for specific Pb−free orderable part numbers, or

contact your local ON Semiconductor sales office or representative.

http://onsemi.com

MARKING DIAGRAMS

Device

Package

Shipping

ORDERING INFORMATION

MC74AC652N

PDIP−24

15 Units/Rail

MC74AC652DW

SOIC−24

30 Units/Rail

MC74ACT652N

PDIP−24

15 Units/Rail

MC74AC652DWR

2

SOIC−24 1000 Tape & Reel

MC74ACT652DW

SOIC−24

30 Units/Rail

MC74ACT652DWR2

SOIC−24 1000 Tape & Reel

A

= Assembly

Location

L, WL

= Wafer Lot

Y, YY

= Year

W, WW = Work Week

PDIP−24

N SUFFIX

CASE 724

SO−24

DW SUFFIX

CASE 751E

ACT652

AWLYYWW

1

24

MC74ACT652N

AWLYYWW

1

24

PDIP−24

SO−24

MC74AC652N

AWLYYWW

AC652

AWLYYWW

TRANSFER

FROM REGISTER TO BUS

REG

REG

A-BUS

B-BUS

REAL TIME TRANSFER

A-BUS TO B-BUS

REG

REG

A-BUS

B-BUS

REAL TIME TRANSFER

B-BUS TO A-BUS

REG

REG

A-BUS

B-BUS

Figure 1.

Figure 2.

STORAGE

FROM BUS TO REGISTER

REG

REG

A-BUS

B-BUS

Figure 3.

Figure 4.