
Inputs
Data I/O
(2)
xA
χ
Input
Operation or Function
xOE
H
H
L
L
L
L
Notes:
xDir
X
X
L
L
H
H
1. H = High voltage level, L = Low voltage level, X = Don’t care,
↑
= Low-to-High transition
2. The data output functions may be enabled or disabled by various signals at the xOE or xDir inputs. Data input functions
are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition on the clock inputs.
Absolute Maximum Ratings*
xCLKAB
H or L
↑
X
X
X
H or L
xCLKBA
H or L
↑
X
H or L
X
X
xSAB
X
X
X
X
L
H
xSBA
X
X
L
H
X
X
xB
χ
Input
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
Output
Input
Input
Output
Function Table
(1)
Operating Temperature........................0°C to +70°C
Storage Temperature......................-65°C to +150°C
Voltage on any Pin
with Respect to Ground.................-2.0 V to +7.0 V
(1)
Maximum Operating Voltage..............................6.0V
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation
of the device at these or any other conditions beyond those
indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Notes:
1. Minimum voltage is -0.6 V dc which may
undershoot to -2.0 V for pulses of less than 20 ns.
Maximum output pin voltage is V
CC
+0.75 V dc
which may overshoot to +7.0 V for pulses of less
than 20 ns.
Applicable over recommended operating range from T
a
= 0°C to +70°C, V
CC
= +5.0V +/- 5% (unless otherwise noted)
Symbol
I
CC
Parameter
Test Conditions
Min
Typ
Max
Units
Quiescent Power Supply
Current
V
CC
= Max, V
IN
= 3.4 V
0.8
1.2
mA
V
IH
V
IL
I
IH
I
IL
I
OZ
Input High Voltage
2.0
V
Input Low Voltage
0.8
±
15
±
15
±
10
V
μ
A
μ
A
μ
A
V
Input High Current (I/O Pins)
V
IN
= V
CC
V
IN
= GND
Input Low Current (I/O Pins)
Output Leakage Current
V
OH
(1)
Output High Voltage
F Grade only
V
CC
= 4.75 V
I
OH
= -10 mA
2.7
V
OH
(2)
Output High Voltage
G Grade only
V
CC
= 4.75 V
I
OH
= -12 mA
I
OL
= 10 mA
I
OL
= 12 mA
2.7
V
V
OL
V
OL
Output Low Voltage (F Grade)
0.55
V
Output Low Voltage (G Grade)
0.55
V
Note:
1. F grade: At V
CC (max)
, the value of V
OH(max)
= 3.75 V and at V
CC(min)
, V
OH(max)
= 3.25 V
2. G grade: At V
CC (max)
, the value of V
OH(max)
= 3.75 V and at V
CC(min)
, V
OH(max)
= 3.35 V
5.0 Volt DC Characteristics
5-22
AT16646