74HC2G126 Datasheet, PDF (6/14 Pages) NXP Semiconductors – Dual buffer/line driver; 3-state

NXP Semiconductors
74HC2G126; 74HCT2G126
Dual buffer/line driver; 3-state
Table 8. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); C_L = 50 pF unless otherwise specified; for test circuit see Figure 8.
Symbol Parameter Conditions
T_amb = −40 °C to +85 °C T_amb = −40 °C to +125 °C Unit
Min Typ^[1] Max
Min
Max
t_en
enable time nOE to nY; see Figure 7
[2]
V_CC = 2.0 V
-
40
115
-
135
ns
V_CC = 4.5 V
-
11
23
-
27
ns
V_CC = 6.0 V
t_dis
disable time nOE to nY; see Figure 7
-
8
20
-
[2]
23
ns
V_CC = 2.0 V
-
25
125
-
150
ns
V_CC = 4.5 V
V_CC = 6.0 V
t_t
transition nY; see Figure 6
time
V_CC = 2.0 V
-
12
25
-
-
10
21
-
[2]
-
18
75
-
30
ns
26
ns
90
ns
V_CC = 4.5 V
-
6
15
-
18
ns
V_CC = 6.0 V
-
5
13
-
C_PD
power
per buffer; V_I = GND to V_CC
[3]
dissipation
capacitance
output enabled
-
11
-
-
output disabled
-
1
-
-
15
ns
-
pF
-
pF
74HCT2G126
t_pd
propagation nA to nY; see Figure 6
delay
V_CC = 4.5 V
[2]
-
15
30
-
36
ns
V_CC = 5.0 V; C_L = 15 pF
-
12
-
-
t_en
enable time nOE to nY; see Figure 7;
V_CC = 4.5 V
[2] _-
11
31
-
t_dis
disable time nOE to nY; see Figure 7;
V_CC = 4.5 V
[2] _-
11
35
-
t_t
transition nY; see Figure 6; V_CC = 4.5 V
[2] _-
6
15
-
time
-
ns
38
ns
42
ns
18
ns
C_PD
power
per buffer;
dissipation V_I = GND to V_CC − 1.5 V
capacitance _{output enabled}
[3]
-
11
-
-
-
pF
output disabled
-
1
-
-
-
pF
[1] All typical values are measured at T_amb = 25 °C.
[2] t_pd is the same as t_PLH and t_PHL.
t_en is the same as t_PZL and t_PZH.
t_dis is the same as t_PLZ and t_PHZ.
t_t is the same as t_THL and t_TLH.
[3] C_PD is used to determine the dynamic power dissipation (P_D in µW).
P_D = C_PD × V_CC2 × f_i × N + Σ(C_L × V_CC2 × 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_CC2 × f_o) = sum of outputs.
74HC_HCT2G126_4
Product data sheet
Rev. 04 — 24 September 2009
© NXP B.V. 2009. All rights reserved.
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