MC74LCX257
http://onsemi.com
4
DC ELECTRICAL CHARACTERISTICS
T
A
= −40°C to +85°C
Symbol Characteristic Condition Min Max Unit
V
IH
HIGH Level Input Voltage (Note 2) 2.3 V ≤ V
CC
≤ 2.7 V 1.7 V
2.7 V ≤ V
CC
≤ 3.6 V 2.0
V
IL
LOW Level Input Voltage (Note 2) 2.3 V ≤ V
CC
≤ 2.7 V 0.7 V
2.7 V ≤ V
CC
≤ 3.6 V 0.8
V
OH
HIGH Level Output Voltage 2.3 V ≤ V
CC
≤ 3.6 V; I
OH
= −100 A V
CC
− 0.2 V
V
CC
= 2.3 V; I
OH
= −8 mA 1.8
V
CC
= 2.7 V; I
OH
= −12 mA 2.2
V
CC
= 3.0 V; I
OH
= −18 mA 2.4
V
CC
= 3.0 V; I
OH
= −24 mA 2.2
V
OL
LOW Level Output Voltage 2.3 V ≤ V
CC
≤ 3.6 V; I
OL
= 100 A 0.2 V
V
CC
= 2.3 V; I
OL
= 8 mA 0.6
V
CC
= 2.7 V; I
OL
= 12 mA 0.4
V
CC
= 3.0 V; I
OL
= 16 mA 0.4
V
CC
= 3.0 V; I
OL
= 24 mA 0.55
I
I
Input Leakage Current 2.3 V ≤ V
CC
≤ 3.6 V; 0 V ≤ V
I
≤ 5.5 V ±5 A
I
OZ
3−State Output Current 2.3 ≤ V
CC
≤ 3.6 V; 0 V ≤ V
O
≤ 5.5 V;
V
I
= V
IH
or V
IL
±5 A
I
OFF
Power−Off Leakage Current V
CC
= 0 V; V
I
or V
O
= 5.5 V 10 A
I
CC
Quiescent Supply Current 2.3 ≤ V
CC
≤ 3.6 V; V
I
= GND or V
CC
10 A
2.3 ≤ V
CC
≤ 3.6 V; 3.6 ≤ V
I
or V
O
≤ 5.5 V ±10
I
CC
Increase in I
CC
per Input 2.3 ≤ V
CC
≤ 3.6 V; V
IH
= V
CC
− 0.6 V 500 A
2. These values of V
I
are used to test DC electrical characteristics only.
AC CHARACTERISTICS t
R
= t
F
= 2.5 ns; R
L
= 500
Limits
T
A
= −40°C to +85°C
V
CC
= 3.3 V ± 0.3 V V
CC
= 2.7 V V
CC
= 2.5 V ± 0.2 V
C
L
= 50 pF C
L
= 50 pF C
L
= 30 pF
Symbol Parameter Waveform Min Max Min Max Min Max Unit
t
PLH
Propagation Delay 1 1.5 6.0 1.5 6.5 1.5 7.2 ns
t
PHL
In to Zn 1.5 6.0 1.5 6.5 1.5 7.2
t
PLH
Propagation Delay 1, 2 1.5 7.0 1.5 8.5 1.5 9.1 ns
t
PHL
S to Zn 1.5 7.0 1.5 8.5 1.5 9.1
t
PZH
Output Enable Time to 3 1.5 7.0 1.5 8.5 1.5 9.1 ns
t
PZL
High and Low Level 1.5 7.0 1.5 8.5 1.5 9.1
t
PHZ
Output Disable Time From 3 1.5 5.5 1.5 6.0 1.5 6.6 ns
t
PLZ
High and Low Level 1.5 5.5 1.5 6.0 1.5 6.6
t
OSHL
Output−to−Output Skew 1.0 ns
t
OSLH
(Note 3) 1.0
3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH−to−LOW (t
OSHL
) or LOW−to−HIGH (t
OSLH
); parameter
guaranteed by design.
