74HC688 View Datasheet(PDF) - Nexperia B.V. All rights reserved
Part Name
Description
Manufacturer
74HC688 Datasheet PDF : 16 Pages
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Nexperia
74HC688
8-bit magnitude comparator
10 Dynamic characteristics
Table 7. Dynamic characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V);
CL = 50 pF unless otherwise specified; for test circuit, see Figure 8
Symbol Parameter Conditions
25 °C
-40 °C to
+85 °C
Min Typ Max Min Max
tpd
propagation Pn, Qn to P=Q; see Figure 6 [1]
delay
VCC = 2.0 V
-
55 170
-
215
VCC = 4.5 V
-
20 34
-
43
VCC = 5.0 V; CL = 15 pF
-
17
-
-
-
VCC = 6.0 V
-
16 29
-
37
E to P=Q; see Figure 7
VCC = 2.0 V
VCC = 4.5 V
-
28 120
-
150
-
10 24
-
30
VCC = 5.0 V; CL = 15 pF
-
8
-
-
-
VCC = 6.0 V
tt
transition time see Figure 7
-
[2]
8
20
-
26
VCC = 2.0 V
-
19 75
-
95
VCC = 4.5 V
-
7
15
-
19
VCC = 6.0 V
-
6
13
-
16
CPD
power
per package; VI = GND to VCC [3] -
30
-
-
-
dissipation
capacitance
-40 °C to Unit
+125 °C
Min Max
-
255 ns
-
51 ns
-
- ns
-
43 ns
-
180 ns
-
36 ns
-
- ns
-
31 ns
-
110 ns
-
22 ns
-
19 ns
-
- pF
[1] tpd is the same as tPHL and tPLH.
[2] tt is the same as tTHL and tTLH.
[3] CPD is used to determine the dynamic power dissipation (PD in μW).
PD = CPD × VCC2 × fi + Σ (CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
Σ (CL × VCC2 × fo) = sum of outputs;
CL = output load capacitance in pF;
VCC = supply voltage in V.
74HC688
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 4 July 2018
© Nexperia B.V. 2018. All rights reserved.
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