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HD74LS293 데이터시트(PDF) 5 Page - Renesas Technology Corp

부품명 HD74LS293
상세설명  4-bit Binary Counter
PDF  8 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS293 데이터시트(HTML) 5 Page - Renesas Technology Corp

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HD74LS293
Rev.3.00, Jul.15.2005, page 5 of 7
Testing Method
Test Circuit
4.5V
QA
Load circuit 1
QA
VCC
RL
CL
P.G.
Zout = 50
Ω
A
B
R0(1)
R0(2)
QC
QD
QB
Same as Load Circuit 1.
QB
Same as Load Circuit 1.
QC
Same as Load Circuit 1.
QD
Notes:
1.
CL includes probe and jig capacitance.
2.
All diodes are 1S2074(H).
Testing Table
Inputs
Outputs
Item
From input to output
A
B
R0
QA
QB
QC
QD
A
→Q
IN
to QA
GND
OUT
OUT
OUT
OUT
ƒmax
B
→Q
4.5V
IN
GND
—
OUT
OUT
OUT
A
→QA
IN
to QA
GND
OUT
—
—
—
A
→QD
IN
to QA
GND
—
—
—
OUT
B
→QB
4.5V
IN
GND
—
OUT
—
—
B
→QC
4.5V
IN
GND
—
—
OUT
—
B
→QD
4.5V
IN
GND
—
—
—
OUT
tPLH
tPHL
R0
→Q**
IN*
to QA
IN
OUT
OUT
OUT
OUT
Notes: * For initialized.
** Measured with each input and unused inputs at 4.5 V.



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