74AHC_AHCT1G86_5 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 05 — 4 July 2007 6 of 12
NXP Semiconductors
74AHC1G86; 74AHCT1G86
2-input EXCLUSIVE-OR gate
[1] t
pd
is the same as t
PLH
and t
PHL
.
[2] Typical values are measured at V
CC
= 3.3 V.
[3] Typical values are measured at V
CC
= 5.0 V.
[4] C
PD
is used to determine the dynamic power dissipation P
D
(µW).
P
D
=C
PD
× V
CC
2
× f
i
+ ∑ (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 Volts.
12. Waveforms
For type 74AHCT1G86
t
pd
propagation
delay
A and B to Y
[1]
V
CC
= 4.5 V to 5.5 V
[3]
C
L
= 15 pF - 3.5 6.9 1.0 8.0 1.0 9.0 ns
C
L
= 50 pF - 5.0 7.9 1.0 9.0 1.0 10.5 ns
C
PD
power
dissipation
capacitance
per buffer;
C
L
=50pF;f=1 MHz;
V
I
= GND to V
CC
[4]
-11- - - - - pF
Table 8. Dynamic characteristics
…continued
GND = 0 V; t
r
= t
f
=
≤
3.0 ns. For waveform see Figure 5. For test circuit see Figure 6.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
Measurement points are given in Table 9.
Fig 5. The input (A and B) to output (Y) propagation delays
mna041
t
PHL
t
PLH
V
M
V
M
A, B
input
Y
output
Table 9. Measurement points
Type Input Output
V
I
V
M
V
M
74AHC1G86 GND to V
CC
0.5 × V
CC
0.5 × V
CC
74AHCT1G86 GND to 3.0 V 1.5 V 0.5 × V
CC
