74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 4 of 16
NXP Semiconductors
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO14 packages: above 70 °C the value of P
tot
derates linearly at 8 mW/K.
For TSSOP14 packages: above 60 °C the value of P
tot
derates linearly at 5.5 mW/K.
For DHVQFN14 packages: above 60 °C the value of P
tot
derates linearly at 4.5 mW/K.
8. Recommended operating conditions
Table 3. Function table
[1]
Input Output
nA nY
LH
HL
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage −0.5 +7.0 V
V
I
input voltage −0.5 +7.0 V
I
IK
input clamping current V
I
< −0.5 V
[1]
−20 - mA
I
OK
output clamping current V
O
< −0.5 V or V
O
>V
CC
+ 0.5 V
[1]
−20 +20 mA
I
O
output current V
O
= −0.5 V to (V
CC
+ 0.5 V) −25 +25 mA
I
CC
supply current - +75 mA
I
GND
ground current −75 - mA
T
stg
storage temperature −65 +150 °C
P
tot
total power dissipation T
amb
= −40 °C to +125 °C
[2]
- 500 mW
Table 5. Operating conditions
Symbol Parameter Conditions Min Typ Max Unit
74AHC14
V
CC
supply voltage 2.0 5.0 5.5 V
V
I
input voltage 0 - 5.5 V
V
O
output voltage 0 - V
CC
V
T
amb
ambient temperature −40 +25 +125 °C
74AHCT14
V
CC
supply voltage 4.5 5.0 5.5 V
V
I
input voltage 0 - 5.5 V
V
O
output voltage 0 - V
CC
V
T
amb
ambient temperature −40 +25 +125 °C
