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74VHC244 Datasheet(PDF) 10 Page - Nexperia B.V. All rights reserved

Part No. 74VHC244
Description  Octal buffer/line driver; 3-state
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Maker  NEXPERIA [Nexperia B.V. All rights reserved]
Homepage  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved

74VHC244 Datasheet(HTML) 10 Page - Nexperia B.V. All rights reserved

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74VHC_VHCT244_1
Product data sheet
Rev. 01 — 17 August 2009
10 of 16
Nexperia
74VHC244; 74VHCT244
Octal buffer/line driver; 3-state
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator
CL = Load capacitance including jig and probe capacitance
RL = Load resistor
S1 = Test selection switch
Fig 8.
Load circuitry for switching times
VM
VM
tW
tW
10 %
90 %
0 V
VI
VI
negative
pulse
positive
pulse
0 V
VM
VM
90 %
10 %
tf
tr
tr
tf
001aad983
DUT
VCC
VCC
VI
VO
RT
RL
S1
CL
open
G
Table 9.
Test data
Type
Input
Load
S1 position
VI
tr, tf
CL
RL
tPHL, tPLH
tPZH, tPHZ
tPZL, tPLZ
74VHC244
VCC
3.0 ns
15 pF, 50 pF
1 k
open
GND
VCC
74VHCT244
3.0 V
3.0 ns
15 pF, 50 pF
1 k
open
GND
VCC
© Nexperia B.V. 2017. All rights reserved


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