MC74AC652DW Просмотр технического описания (PDF) - ON Semiconductor
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MC74AC652DW Datasheet PDF : 11 Pages
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MC74AC652, MC74ACT652
FUNCTION TABLE
GAB
L
L
GBA
H
H
Inputs
CAB
CBA
H or L H or L
⇑
⇑
SAB
X
X
SBA
X
X
Data I/O*
A0 − A7
B0 − B7
Input
Input
Operation or Function
Isolation
Store A and B Data
X
H
⇑
H or L
X
X
H
H
⇑
⇑
X**
X
Input
Input
Unspecified* Store A, Hold B
Output Store A in Both Registers
L
X
H or L
⇑
X
X Unspecified*
Input
Hold A, Store B
L
L
⇑
⇑
X
X**
Output
Input
Store B in Both Registers
L
L
L
L
X
X
X
X
H or L
X
L
H
Output
Input
Real-Time B Data to A Bus
Stored B Data to A Bus
H
H
X
X
L
X
H
H
H or L
X
H
X
Input
Output
Real-Time A Data to B Bus
Stored A Data to B Bus
H
L
H or L H or L
H
H
Output
Output
Stored A Data to B Bus and
Stored B Data to A Bus
*The data output functions may be enabled or disabled by various signals at the GBA and GAB inputs. Data input functions are always enabled;
i.e., data at the bus pins will be stored on every LOW-to-HIGH transition of the appropriate clock inputs.
**Select control = L: clocks can occur simultaneously.
H = HIGH Voltage Level; L = LOW Voltage Level; X = Immaterial; ⇑ = LOW-to-HIGH Transition
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage (Referenced to GND)
Vin
DC Input Voltage (Referenced to GND)
Vout
DC Output Voltage (Referenced to GND)
Iin
DC Input Current, per Pin
Iout
DC Output Sink/Source Current, per Pin
ICC
DC VCC or GND Current per Output Pin
Tstg
Storage Temperature
−0.5 to +7.0
V
−0.5 to VCC + 0.5
V
−0.5 to VCC + 0.5
V
± 20
mA
± 50
mA
± 50
mA
−65 to +150
°C
*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recom-
mended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
Min
VCC
Supply Voltage
′AC
′ACT
2.0
5.0
6.0
4.5
5.0
5.5
Vin, Vout
DC Input Voltage, Output Voltage (Ref. to GND)
0
−
VCC
tr, tf
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
VCC @ 3.0 V
−
150
−
VCC @ 4.5 V
−
40
−
VCC @ 5.5 V
−
25
−
tr, tf
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
VCC @ 4.5 V
−
10
−
VCC @ 5.5 V
−
8.0
−
TJ
Junction Temperature (PDIP)
−
−
140
TA
Operating Ambient Temperature Range
−40
25
85
IOH
Output Current — HIGH
−
−
−24
IOL
Output Current — LOW
−
−
24
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
Unit
V
V
ns/V
ns/V
°C
°C
mA
mA
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