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74LVC169DB Datasheet(PDF) 14 Page - NXP Semiconductors

Part # 74LVC169DB
Description  Presettable synchronous 4-bit up/down binary counter
PDF  22 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

74LVC169DB Datasheet(HTML) 14 Page - NXP Semiconductors

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74LVC169_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 8 June 2009
14 of 22
NXP Semiconductors
74LVC169
Presettable synchronous 4-bit up/down binary counter
[1]
The circuit preforms better when RL = 1000 kΩ.
Test data is given in Table 9.
Definitions for test circuit:
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
Fig 13. Test circuit for measuring 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
001aae331
VEXT
VCC
VI
VO
DUT
CL
RT
RL
RL
G
Table 9.
Test data
Supply voltage
Input
Load
S1 position
VI
tr, tf
CL
RL
tPLH: tPHL
1.2 V
VCC
≤ 2.0 ns
30 pF
500
Ω[1]
open
2.7 V
2.7 V
≤ 2.5 ns
50 pF
500
Ω
open
3.0 V to 3.6 V
2.7 V
≤ 2.5 ns
50 pF
500
Ω
open



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