N74F543D,623 NXP Semiconductors, N74F543D,623 Datasheet - Page 4
![IC TRANSCVR TRI-ST 8BIT 24SOIC](/photos/6/52/65263/568-24-soic_sot137-1_sml.jpg)
N74F543D,623
Manufacturer Part Number
N74F543D,623
Description
IC TRANSCVR TRI-ST 8BIT 24SOIC
Manufacturer
NXP Semiconductors
Series
74Fr
Datasheet
1.N74F543DB118.pdf
(15 pages)
Specifications of N74F543D,623
Logic Type
Transceiver, Non-Inverting
Number Of Elements
1
Number Of Bits Per Element
8
Current - Output High, Low
3mA, 24mA
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
933876920623
N74F543D-T
N74F543D-T
N74F543D-T
N74F543D-T
NXP Semiconductors
6. Functional description
Table 3.
[1]
74F543_4
Product data sheet
Input
OEXX
H
X
L
L
L
L
H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition of LEXX or EXX (XX = AB or BA);
L = LOW voltage level;
l = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition of LEXX or EXX (XX = AB or BA);
NC = no change;
X = don’t care;
Z = high-impedance OFF-state.
= LOW-to-HIGH clock transition of LEXX or EXX (XX = AB or BA);
Function selection
6.1 Function table
6.2 Description
EXX
X
H
L
L
L
The 74F543 contains two sets of eight D-type latches, with separate control pins for each
set.
Using data flow from A-to-B as an example, when the A-to-B enable (EAB) input, the
A-to-B latch enable (LEAB) input and the A-to-B output latch enable (OEAB) are all LOW,
the A-to-B path is transparent.
A subsequent LOW-to-HIGH transition of the LEAB signal puts the A data into the latches
where it is stored and the B outputs no longer change with the A inputs. With EAB and
OEAB both LOW, the 3-state B output buffers are active and display the data present at
the outputs of the A latches.
Control of data flow from B-to-A is similar, but using the EBA, LEBA, and OEBA inputs.
[1]
LEXX
X
X
L
L
H
Rev. 04 — 26 January 2010
An or Bn
X
X
h
l
h
l
H
L
X
Octal latched transceiver with dual enable; 3-state
Output
Bn or An
Z
Z
Z
Z
H
L
H
L
NC
Status
disabled
disabled + latch
latch + display
transparent
hold
© NXP B.V. 2010. All rights reserved.
74F543
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