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HD74LS191 Datenblatt(PDF) 7 Page - Renesas Technology Corp

Teilenummer HD74LS191
Bauteilbeschribung  Synchronous Up / Down 4-bit Binary Counter (single clock line)
PDF  11 Pages
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Hersteller  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS191 Datenblatt(HTML) 7 Page - Renesas Technology Corp

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HD74LS191
Rev.2.00, Feb.18.2005, page 7 of 10
Testing Method
Test Circuit
4.5V
Ripple
Clock
Load circuit 1
Output
VCC
RL
CL
Input
P.G.
Zout = 50
Ω
A
B
Down/Up
Clock
C
D
Load
Enable
QA
QB
QC
QD
Max/Min
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Notes:
1.
CL includes probe and jig capacitance.
2.
All diodes are 1S2074(H).
Waveforms 1
Output
Data Input
Load Input
1.3V
1.3V
1.3V
1.3V
tTHL
tTLH
tTLH
tTLH
tsu
tsu
VOH
VOL
0V
3V
0V
3V
10%
10%
10%
10%
90%
90%
90%
90%
Note:
Input pulse: tTLH, tTHL
≤ 10 ns, PRR = 1 MHz, duty cycle ≤ 50%



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