74LS122 Просмотр технического описания (PDF) - Motorola => Freescale
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74LS122 Datasheet PDF : 10 Pages
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SN54/74LS122 • SN54/74LS123
0.55
VRC = 5 V
Cext = 1000 pF
0.5
K
0.45
0.4
° - 55 C
°0 C
° 25 C
° 70 C
° 125 C
0.55
0.5
K
0.45
0.4
VCC = 5 V
Cext = 1000 pF
° - 55 C
°0 C
° 70 C
° 125 C
° 25 C
0.55
0.5
K
0.45
0.4
Cext = 1000 pF
° - 55 C
°0 C
° 25 C
° 70 C
° 125 C
0.35
4.5
5
5.5
VCC
Figure 5. K versus VCC
0.35
4.5
5
5.5
VRC
Figure 6. K versus VRC
0.35
4.5
5
5.5
VCC = VRC
Figure 7. K versus VCC and VRC
100000
10000
Ω Rext = 260 k
Ω Rext = 160 k
1000
100
10
1
Ω Rext = 80 k
Ω Rext = 40 k
Ω Rext = 20 k
Ω Rext = 10 k
Ω Rext = 5 k
10
100
Cext, EXTERNAL TIMING CAPACITANCE (pF)
Figure 8
1000
FAST AND LS TTL DATA
5-202
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