MC74AC652 Datasheet, PDF (3/8 Pages) Motorola, Inc – OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING)

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
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
VCC
Supply Voltage
′AC
′ACT
2.0
5.0
4.5
5.0
Vin, Vout
DC Input Voltage, Output Voltage (Ref. to GND)
0
Input Rise and Fall Time (Note 1)
tr, tf
′AC Devices except Schmitt Inputs
Input Rise and Fall Time (Note 2)
tr, tf
′ACT Devices except Schmitt Inputs
TJ
Junction Temperature (PDIP)
TA
Operating Ambient Temperature Range
IOH
Output Current — HIGH
IOL
Output Current — LOW
VCC @ 3.0 V
150
VCC @ 4.5 V
40
VCC @ 5.5 V
25
VCC @ 4.5 V
10
VCC @ 5.5 V
8.0
–40
25
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.
Min
6.0
5.5
VCC
140
85
–24
24
Unit
V
V
ns/V
ns/V
°C
°C
mA
mA
FACT DATA
5-3