Diodes 74AHCT14 - Manual (Page 3)

74AHCT14
Document number: DS35352 Rev. 3 - 2
3 of 8
www.diodes.com
January 2013
© Diodes Incorporated
NEW PROD
UC
T
74AHCT14
Recommended Operating Conditions
(Note 5) (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Min Max Unit
V
CC
Supply Voltage 4.5 5.5 V
V
I
Input Voltage 0 5.5 V
V
O
Output Voltage 0 V
CC
V
Δt/ΔV Input Transition Rise or Fall Rate 20 ns/V
T
A
Operating Free-Air Temperature -40 +125 °C
Note: 5. Unused inputs should be held at V
CC
or Ground.
Electrical Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Test Conditions V
CC
T
A
= -40°C to +85°C T
A
= -40°C to +125°C Unit
Min Max Min Max
V
T+
Positive-Going Input
Threshold Voltage
4.5V 1.9 1.9
V
5.5V 2.1 2.1
V
T-
Negative-Going
Input Threshold
Voltage 4.5V 0.5 0.5
V
5.5V 0.6 0.55
∆V
T
Hysteresis
(V
T+
- V
T-)
4.5V 0.5 0.5
V
5.5V 0.6 0.6
V
OH
High-Level Output
Voltage
I
OH
= -50μA 4.5V 4.4 4.4
V
I
OH
= -8mA 4.5V 3.80 3.70
V
OL
Low-Level Output
Voltage I
OL
= 50μA 4.5V 0.1 0.1
V
I
OL
= 8mA 4.5V 0.44 0.55
I
I
Input Current V
I
= GND to 5.5V 3.6V ±1 ±2 μA
I
CC
Supply Current V
I
= GND or V
CC,
I
O
= 0 3.6V 20 40 μA
ΔI
CC
Additional Supply
Current
One input at V
CC
-2.1V
Other pins at V
CC
or
GND.
4.5V to 5.5V 1.35 5 mA
Operating Characteristics
Parameter
Test
Conditions
V
CC
= 5.5V
Unit
Typ
C
pd
Power Dissipation
Capacitance per Gate
f = 1 MHz 14.8 pF
C
i
Input Capacitance
V
i
= V
CC
– or
GND
4.0 pF
Switching Characteristics
Symbol Parameter
Test
Conditions
V
CC
T
A
= +25°C -40°C to +85°C -40°C to +125°C
Unit
Min Typ Max Min Max Min Max
t
PD
Propagation
Delay A
N
to Y
N
Figure 1
C
L
= 15pF
4.5V to 5.5V 0.5 3.4 6.9 0.5 8.0 0.5 9.0
ns
Figure 1
C
L
= 50pF
4.5V to 5.5V 0.5 4.9 10.0 0.5 10.0 0.5 11.0