74lvc544a NXP Semiconductors, 74lvc544a Datasheet - Page 5

• Manufacturer Part Number: 74lvc544a
• Description: Octal D-type Registered Transceiver, Inverting 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7. Functional description
9397 750 13127
Product data sheet
6.2 Pin description
7.1 Function table
Table 3:
Table 4:
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Operating mode
Disabled
Disabled plus latch
Latch plus display
Pin description
Function table
Symbol
LEBA
OEBA
A0
A1
A2
A3
A4
A5
A6
A7
EAB
GND
OEAB
LEAB
B7
B6
B5
B4
B3
B2
B1
B0
EBA
V
CC
Rev. 03 — 11 May 2004
[1]
Description
B to A latch enable input (active LOW)
B to A output enable input (active LOW)
A data input or output
A data input or output
A data input or output
A data input or output
A data input or output
A data input or output
A data input or output
A data input or output
A to B enable input (active LOW)
ground (0 V)
A to B output enable input (active LOW)
A to B latch enable input (active LOW)
B data output or input
B data output or input
B data output or input
B data output or input
B data output or input
B data output or input
B data output or input
B data output or input
B to A enable input (active LOW)
supply voltage
Input
OEXX
H
X
L
L
L
L
Octal D-type registered transceiver; inverting; 3-state
EXX
X
H
L
L
LEXX
X
X
L
L
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
data
X
X
h
l
h
l
74LVC544A
Output
Z
Z
Z
Z
L
H
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