74LVC544 PHILIPS [NXP Semiconductors], 74LVC544 Datasheet - Page 3

• Manufacturer Part Number: 74LVC544
• Description: Octal D-type registered transceiver, inverting 3-State
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
PIN DESCRIPTION
FUNCTION TABLE
XX
H
L
h
l
X
NC
Z
1998 Jul 29
22, 21, 20, 19,
PIN NUMBER
1
2
3, 4, 5, 6,
7, 8, 9, 10
11
12
18, 17, 16, 15
13
14
23
24
Octal D-type registered transceiver, inverting
(3-State)
= AB for A-to-B direction, BA for B-to-A direction
= HIGH voltage level
= LOW voltage level
= HIGH state must be present one set-up time before the LOW-to-HIGH transition of LEAB, LEBA, EAB, EBA
= LOW state must be present one set-up time before the LOW-to-HIGH transition of LEAB, LEBA, EAB, EBA
= Don’t care
= LOW–to–HIGH level transition
= No change
= High impedance OFF-state
OEXX
H
X
L
L
L
L
L
L
L
SYMBOL
LEBA
OEBA
A0–A7
EBA
GND
B0–B7
OEAB
LEAB
EAB
VCC
FUNCTION
‘B’ to ‘A’ latch enable input (active
LOW)
‘B’ to ‘A’ output enable input (active
LOW)
‘A’ data inputs/outputs
‘B’ to ‘A’ enable input (active LOW)
Ground (0V)
‘B’ data inputs/outputs
‘A’ to ‘B’ output enable input (active
LOW)
‘A’ to ‘B’ latch enable input (active
LOW)
‘A’ to ‘B’ enable input (active LOW)
Positive supply voltage
EXX
H
X
L
L
L
L
L
INPUTS
LEXX
X
X
H
L
L
L
L
3
PIN CONFIGURATION
DATA
X
X
H
X
h
h
L
l
l
OEBA
LEBA
GND
EAB
A0
A1
A2
A3
A4
A5
A6
A7
10
12
11
1
2
3
4
5
6
7
8
9
OUTPUTS
OUTPUTS
NC
Z
Z
Z
Z
H
H
L
L
24
23
22
21
20
19
18
17
16
15
14
13
SV00733
74LVC544A
V
EBA
B0
B1
B2
B3
B4
B5
B6
B7
LEAB
OEAB
CC
Product specification
Disabled + Latch
Latch + Display
Transparent
Disabled
Disabled
STATUS
STATUS
Hold