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54LS140/74LS140 LSTTL 4 50Ω : tpd=12ns Pd=4.3mW/ : (1/2)
: :
A H L × × × H= B H × L × × L= C H × × L × D H × × × L ×= Y L H H H H
:
74Ⅱ Vcc VIH VIL IOH IOL TA
BDTIC
54 5.25 0.8 -40 24 4.5 2 0.7 -40 12 -55 125 5 5.5 V V V mA mA ℃
5 4.75 2
-40
85
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54LS140/74LS140 LSTTL 4 50Ω : (,)
74Ⅱ 54 Vcc= II=-18mA -1.5 -1.5 V IOH= 2.0 2.0 Vcc= VIL=0.5V V IOH=-1.2mA 2.7 2.5 3.4 VIL= Vcc= 0.5 0.25 0.4 V VIH=2V IOL= 0.1 20 -0.4 -30 -130 1.0 6.0 -30 0.45 3.0 0.1 20 -0.4 -130 1.0 6.0 mA μA mA mA mA mA
VIK VOH
VOL II IIH IIL
Vcc= VI=7V () Vcc= VI=2.7V Vcc= VI=0.4V Vcc= VO=0V Vcc= VI=0V Vcc=
IOS ICCH ICCL
: Vcc=5.0V, TA=25℃。
():Vcc=5.0V, TA=25℃
tPLH tPHL () A、B、C、D A、B、C、D () Y Y CL=45pF RL=667Ω 12 12 24 24 ns ns
www.BDTIC.com
BDTIC
www.bdtic.com/Semiconductor
Free Datasheet http://www.datasheet4u.net/
.