MC74AC648N Motorola, MC74AC648N Datasheet

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MC74AC648N

Manufacturer Part Number
MC74AC648N
Description
OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (INVERTING)
Manufacturer
Motorola
Datasheet
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Octal Transceiver/Register
with 3 State Outputs (Inverting)
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 the following figures.
4
Independent Registers for A and B Buses
Multiplexed Real-Time and Stored Data Transfers
Choice of True and Inverting Data Paths
3-State Outputs
300 mil Slim Dual In-Line Package
Outputs Source/Sink 24 mA
FROM BUS TO REGISTER
The MC74AC648/74ACT648 consist of registered bus transceiver circuits,
REG
REG
REAL TIME TRANSFER
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
A-BUS TO B-BUS
Figure 1
Figure 3
STORAGE
A-BUS
B-BUS
A-BUS
B-BUS
REG
REG
FROM REGISTER TO BUS
REG
REG
REAL TIME TRANSFER
B-BUS TO A-BUS
TRANSFER
Figure 2
Figure 4
A-BUS
B-BUS
A-BUS
B-BUS
REG
REG
FACT DATA
5-1
CAB
SAB
DIR
CBA
SBA
G
MC74ACT648
MC74AC648
B 0 B 1 B 2 B 3 B 4 B 5 B 6 B 7
TRANSCEIVER/REGISTER
A 0 A 1 A 2 A 3 A 4 A 5 A 6 A 7
WITH 3-STATE OUTPUTS
LOGIC SYMBOL
SOIC PACKAGE
(INVERTING)
CASE 751E-04
CASE 724-03
DW SUFFIX
N SUFFIX
PLASTIC
OCTAL

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MC74AC648N Summary of contents

Page 1

... Choice of True and Inverting Data Paths 3-State Outputs 300 mil Slim Dual In-Line Package Outputs Source/Sink 24 mA This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. 4 DataSheet U .com REAL TIME TRANSFER B-BUS TO A-BUS ...

Page 2

FUNCTION TABLE Inputs G DIR CAB The data output functions may be enabled or disabled by various ...

Page 3

MAXIMUM RATINGS* Symbol Supply Voltage (Referenced to GND Input Voltage (Referenced to GND) V out DC Output Voltage (Referenced to GND Input Current, per Pin I out DC Output Sink/Source ...

Page 4

DC CHARACTERISTICS Symbol Symbol V IH Minimum High Level Input Voltage Input Voltage V IL Maximum Low Level Input Voltage Input Voltage V OH Minimum High Level Output Voltage Output Voltage V OL Maximum Low Level Output Voltage Output ...

Page 5

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3) Symbol Symbol Propagation Delay t PLH t PLH Clock to Bus Propagation Delay t PHL t PHL Clock to Bus Propagation Delay t PLH t PLH Bus to Bus ...

Page 6

AC OPERATING REQUIREMENTS Symbol Symbol Setup Time, HIGH or LOW Bus to Clock Hold Time, HIGH or LOW Bus to Clock Clock Pulse Width HIGH or LOW ...

Page 7

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3) Symbol Symbol Propagation Delay t PLH t PLH Clock to Bus Propagation Delay t PHL t PHL Clock to Bus Propagation Delay t PLH t PLH Bus to Bus ...

Page 8

AC OPERATING REQUIREMENTS Symbol Symbol Setup Time, HIGH or LOW Bus to Clock Hold Time, HIGH or LOW Bus to Clock Clock Pulse Width HIGH or LOW ...

Page 9

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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