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74AHC14BQ,115

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 6 of 16
NXP Semiconductors
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
10. Dynamic characteristics
[1] Typical values are measured at nominal supply voltage (V
CC
= 3.3 V and V
CC
= 5.0 V).
[2] t
pd
is the same as t
PLH
and t
PHL
.
[3] C
PD
is used to determine the dynamic power dissipation (P
D
in µW).
P
D
=C
PD
× V
CC
2
× f
i
× N+Σ(C
L
× V
CC
2
× f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
Σ(C
L
× V
CC
2
× f
o
) = sum of the outputs.
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ
[1]
Max Min Max Min Max
74AHC14
t
pd
propagation
delay
nA to nY; see Figure 6
[2]
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF - 4.3 12.8 1.0 15.0 1.0 16.0 ns
C
L
= 50 pF - 5.8 16.3 1.0 18.0 1.0 20.5 ns
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF - 3.2 8.6 1.0 10.0 1.0 11.0 ns
C
L
= 50 pF - 4.2 10.6 1.0 12.0 1.0 13.5 ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz; V
I
= GND to V
CC
[3]
-10- - - - -pF
74AHCT14
t
pd
propagation
delay
nA to nY; see Figure 6
[2]
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF - 4.0 7.0 1.0 8.0 1.0 9.0 ns
C
L
= 50 pF - 5.4 8.0 1.0 9.0 1.0 10.0 ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz; V
I
= GND to V
CC
[3]
-12- - - - -pF
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 7 of 16
NXP Semiconductors
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
11. Waveforms
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 6. Input to output propagation delays
mna344
t
PHL
t
PLH
V
M
V
M
V
M
V
M
nA input
nY output
GND
V
I
V
OH
V
OL
Table 8. Measurement points
Type Input Output
V
M
V
M
74AHC14 0.5 × V
CC
0.5 × V
CC
74AHCT14 1.5 V 0.5 × V
CC
Test data is given in Table 9.
Definitions test circuit:
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator
C
L
= Load capacitance including jig and probe capacitance
Fig 7. Load circuitry for measuring switching times
001aah768
t
W
t
W
t
r
t
r
t
f
V
M
V
I
negative
pulse
GND
V
I
positive
pulse
GND
10 %
90 %
90 %
10 %
V
M
V
M
V
M
t
f
V
CC
DUT
R
T
V
I
V
O
C
L
G
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 8 of 16
NXP Semiconductors
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
12. Transfer characteristics
13. Transfer characteristics waveforms
Table 9. Test data
Type Input Load Test
V
I
t
r
, t
f
C
L
74AHC14 V
CC
≤ 3.0 ns 50 pF, 15 pF t
PLH
, t
PHL
74AHCT14 3.0 V ≤ 3.0 ns 50 pF, 15 pF t
PLH
, t
PHL
Table 10. Transfer characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V); see Figure 8 and Figure 9.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74AHC14
V
T+
positive-going
threshold
voltage
V
CC
= 3.0 V - - 2.2 - 2.2 - 2.2 V
V
CC
= 4.5 V - - 3.15 - 3.15 - 3.15 V
V
CC
= 5.5 V - - 3.85 - 3.85 - 3.85 V
V
T−
negative-going
threshold
voltage
V
CC
= 3.0 V 0.9 - - 0.9 - 0.9 - V
V
CC
= 4.5 V 1.35 - - 1.35 - 1.35 - V
V
CC
= 5.5 V 1.65 - - 1.65 - 1.65 - V
V
H
hysteresis
voltage
V
CC
= 3.0 V 0.3 - 1.2 0.3 1.2 0.25 1.2 V
V
CC
= 4.5 V 0.4 - 1.4 0.4 1.4 0.35 1.4 V
V
CC
= 5.5 V 0.5 - 1.6 0.5 1.6 0.45 1.6 V
74AHCT14
V
T+
positive-going
threshold
voltage
V
CC
= 4.5 V - - 1.9 - 1.9 - 1.9 V
V
CC
= 5.5 V - - 2.1 - 2.1 - 2.1 V
V
T−
negative-going
threshold
voltage
V
CC
= 4.5 V 0.5 - - 0.5 - 0.5 - V
V
CC
= 5.5 V 0.6 - - 0.6 - 0.6 - V
V
H
hysteresis
voltage
V
CC
= 4.5 V 0.4 - 1.4 0.4 1.4 0.35 1.4 V
V
CC
= 5.5 V 0.4 - 1.5 0.4 1.5 0.35 1.5 V
Fig 8. Transfer characteristics Fig 9. Transfer characteristics definitions
mna207
V
O
V
I
V
H
V
T+
V
T−
mna208
V
O
V
I
V
H
V
T+
V
T−
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

74AHC14BQ,115

Mfr. #:
Buy 74AHC14BQ,115
Manufacturer:
Nexperia
Description:
Inverters HEX SCHMITT TRIGGER
Lifecycle:
New from this manufacturer.
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