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74F543DB Datasheet(PDF) 4 Page - NXP Semiconductors

Part # 74F543DB
Description  Octal registered transceiver, non-inverting 3-State
PDF  16 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74F543DB Datasheet(HTML) 4 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74F543, 74F544
Octal registered transceivers
1994 Dec 5
4
PIN CONFIGURATION – 74F544
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
VCC
B0
B1
B2
B3
B4
B5
B6
B7
A0
A1
A2
A3
A4
A5
A6
A7
LEBA
OEBA
EAB
LEAB
OEAB
EBA
GND
SF00240
LOGIC SYMBOL (IEEE/IEC) – 74F544
13
2
11
1
23
14
IEN3
G1
1C5
2EN4
G2
2C6
35D
4
6D
3
4
5
6
7
8
9
10
22
21
20
19
18
17
16
15
SF00241
LOGIC SYMBOL – 74F544
11
23
14
1
EAB
EBA
LEAB
LEBA
VCC = Pin 24
A0 A1 A2 A3 A4 A5 A6 A7
B0 B1 B2 B3 B4 B5 B6 B7
13
2
22 21 20 19 18 17 16 15
34
56789
10
SF00242
GND = Pin 12
OEAB
OEBA
FUNCTION TABLE for 74F543 and 74F544
INPUTS
OUTPUTS
STATUS
OEXX
EXX
LEXX
DATA
74F543
74F544
H
X
X
X
Z
Z
Disabled
X
H
X
X
Z
Z
Disabled
L
↑
L
h
Z
Z
Disable +
L
↑
L
l
Z
Z
Disable +
Latch
L
L
↑
h
H
L
Latch +
L
L
↑
l
L
H
Latch +
Display
L
L
L
H
H
L
Transparent
L
L
L
L
L
H
Transparent
L
L
H
X
NC
NC
Hold
H
= High voltage level
L
= Low voltage level
h
= High state must be present one setup time before the
Low-to-High transition of LEXX or EXX (XX=AB or BA)
l
= Low state must be present one setup time before the
Low-to-High transition of LEXX or EXX (XX=AB or BA)
↑ = Low-to-High transition of LEXX or EXX XX = AB or BA
X
= Don’t care
NC = No change
Z
= High impedance “off” state



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