MC74ACT646 ON Semiconductor, MC74ACT646 Datasheet - Page 3

• Manufacturer Part Number: MC74ACT646
• Description: OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING)
• Manufacturer: ON Semiconductor

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DataSheet
4
U
FUNCTION TABLE
*The data output functions may be enabled or disabled by various signals at the G and DIR inputs. Data input functions are always enabled;
NOTE:
MAXIMUM RATINGS*
V CC
V in
V out
I in
I out
I CC
T stg
*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recom-
RECOMMENDED OPERATING CONDITIONS
V
V CC
V in , V out
t r , t f
t t f
t r , t f
T J
T A
I OH
I OL
1. V in from 30% to 70% V CC ; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. V in from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
r , f
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i.e., data at the bus pins will be stored on every LOW–to–HIGH transition of the appropriate clock inputs.
mended Operating Conditions.
Symbol
G
H
H
L
L
L
L
Symbol
H = HIGH Voltage Level; L = LOW Voltage Level; X = Immaterial;
DIR
X
X
H
H
L
L
Supply Voltage
Supply Voltage
DC Input Voltage, Output Voltage (Ref. to GND)
Input Rise and Fall Time (Note 1)
Input Rise and Fall Time (Note 2)
In ut Rise and Fall Time (Note 2)
Junction Temperature (PDIP)
Operating Ambient Temperature Range
Output Current – High
Output Current – Low
AC Devices except Schmitt Inputs
AC Devices except Schmitt Inputs
ACT Devices except Schmitt Inputs
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC V CC or GND Current per Output Pin
Storage Temperature
H or L
H or L
CAB
X
X
X
Inputs
H or L
CBA
X
X
X
X
SAB
X
X
X
X
H
L
Parameter
MC74AC646, MC74ACT646
SBA
H
X
X
L
X
X
Parameter
http://onsemi.com
A 0 –A 7
Output
Input
Input
3
V CC @ 3.0 V
V CC @ 4.5 V
V CC @ 5.5 V
V CC @ 4.5 V
V CC @ 5.5 V
Data I/O*
ACT
AC
= LOW–to–HIGH Transition
B 0 –B 7
Output
Input
Input
Min
–40
2.0
4.5
0
–
–
–
–
–
–
–
–
Isolation
Store A and B Data
Real Time B Data to A Bus
Stored B Data to A Bus
Real Time A Data to B Bus
Stored A Data to B Bus
Typ
–0.5 to V CC +0.5
–0.5 to V CC +0.5
150
Operation or F nction
Operation or Function
5.0
5.0
8.0
40
25
10
25
–
–
–
–
–0.5 to +7.0
–65 to +150
Value
20
50
50
V CC
Max
140
–24
6.0
5.5
85
24
–
–
–
–
–
Unit
Unit
ns/V
ns/V
ns/V
mA
mA
mA
mA
mA
V
V
V
V
V
V
C
C
C