74HC245-Q100; 74HCT245-Q100
Nexperia
Octal bus tranceiver; 3-state
Table 9.
Dynamic characteristics type 74HCT245-Q100
GND = 0 V; for test circuit, see Figure 7.
Symbol
Tamb = 25 C
tpd
Parameter
Conditions
Min
Typ
Max
Unit
[1]
propagation delay
An to Bn or Bn to An;
see Figure 5
VCC = 4.5 V
-
-
-
12
10
16
22
-
ns
ns
ns
VCC = 5.0 V; CL = 15 pF
[2]
[3]
[4]
[5]
ten
tdis
tt
enable time
OE to An or OE to Bn;
VCC = 4.5 V; see Figure 6
30
disable time
OE to An or OE to Bn;
CC = 4.5 V; see Figure 6
-
-
-
16
5
30
12
-
ns
ns
pF
V
transition time
An, Bn; VCC = 4.5 V;
see Figure 5
CPD
power dissipation capacitance
VI = GND to VCC 1.5 V
30
Tamb = 40 C to +85 C
[1]
[2]
tpd
ten
propagation delay
VCC = 4.5 V; see Figure 5
-
-
-
-
28
38
ns
ns
enable time
disable time
transition time
OE to An or OE to Bn;
VCC = 4.5 V; see Figure 6
[3]
[4]
tdis
tt
OE to An or OE to Bn;
VCC = 4.5 V; see Figure 6
-
-
-
-
38
15
ns
ns
An, Bn; VCC = 4.5 V;
see Figure 5
T
amb = 40 C to +125 C
[1]
[2]
tpd
ten
propagation delay
enable time
VCC = 4.5 V; see Figure 5
-
-
-
-
33
45
ns
ns
OE to An or OE to Bn;
VCC = 4.5 V; see Figure 6
[3]
[4]
tdis
tt
disable time
OE to An or OE to Bn;
VCC = 4.5 V; see Figure 6
-
-
-
-
45
18
ns
ns
transition time
An, Bn; VCC = 4.5 V;
see Figure 5
[1] tpd is the same as tPLH and tPHL
[2] en is the same as tPZH and tPZL
[3] tdis is the same as tPLZ and tPHZ
[4] tt is the same as tTHL and tTLH
.
t
.
.
.
[5] CPD is used to determine the dynamic power dissipation (PD in W):
PD = CPD VCC2 fi N + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL VCC2 fo) = sum of outputs.
74HC_HCT245_Q100
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Product data sheet
Rev. 1 — 22 July 2013
11 of 20
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