74HC373; 74HCT373
Philips Semiconductors
Octal D-type transparent latch; 3-state
Table 9:
Dynamic characteristics 74HC373 …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
tTHL
tTLH
Conditions
see Figure 8
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 9
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 11
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 11
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
Min
Typ
Max
Unit
,
output transition time
pulse width LE HIGH
set-up time Dn to LE
hold time Dn to LE
-
-
-
-
-
-
90
18
15
ns
ns
ns
tW
tsu
th
120
24
-
-
-
-
-
-
ns
ns
ns
20
75
15
13
-
-
-
-
-
-
ns
ns
ns
5
5
5
-
-
-
-
-
-
ns
ns
ns
[1] CPD is used to determine the dynamic power dissipation (PD in µW).
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.
Table 10: Dynamic characteristics 74HCT373
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL
tPLH
,
propagation delay
Dn to Qn
see Figure 8
VCC = 4.5 V
-
-
17
14
30
-
ns
ns
VCC = 5 V; CL = 15 pF
see Figure 9
LE to Qn
VCC = 4.5 V
-
-
-
16
13
19
32
-
ns
ns
ns
VCC = 5 V; CL = 15 pF
tPZH
tPZL
,
,
3-state output enable time OE to Qn VCC = 4.5 V; see Figure 10
32
tPHZ
tPLZ
3-state output disable time OE to Qn VCC = 4.5 V; see Figure 10
-
-
18
5
30
12
ns
ns
tTHL
,
output transition time
VCC = 4.5 V; see Figure 8
tTLH
74HC_HCT373_3
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 20 January 2006
14 of 26
NXP [ NXP ]
