Philips Semiconductors
Hex inverting Schmitt trigger
Product specification
74AHC14; 74AHCT14
AC CHARACTERISTICS
Type 74AHC14
GND = 0 V; tr = tf ≤ 3.0 ns.
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS CL
Tamb (°C)
25
−40 to +85 −40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 3.0 to 3.6 V; note 1
tPHL/tPLH propagation delay
nA to nY
propagation delay
nA to nY
see Figs 4 and 5 15 pF −
50 pF −
4.3 12.8 1.0 15.0 1.0 16.0 ns
5.8 16.3 1.0 18.0 1.0 20.5 ns
VCC = 4.5 to 5.5 V; note 2
tPHL/tPLH propagation delay
nA to nY
propagation delay
nA to nY
see Figs 4 and 5 15 pF −
50 pF −
3.2 8.6 1.0 10.0 1.0 11.0 ns
4.2 10.6 1.0 12.0 1.0 13.5 ns
Notes
1. Typical values at VCC = 3.3 V.
2. Typical values at VCC = 5.0 V.
Type 74AHCT14
GND = 0 V; tr = tf ≤ 3.0 ns.
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS CL
Tamb (°C)
25
−40 to +85 −40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 4.5 to 5.5 V; note 1
tPHL/tPLH propagation delay
nA to nY
propagation delay
nA to nY
see Figs 4 and 5 15 pF −
50 pF −
4.0 7.0 1.0 8.0 1.0 9.0 ns
5.4 8.0 1.0 9.0 1.0 10.0 ns
Note
1. Typical values at VCC = 5.0 V.
1999 Sep 27
7