74ACTQ16543MTD Fairchild Semiconductor, 74ACTQ16543MTD Datasheet - Page 2

• Manufacturer Part Number: 74ACTQ16543MTD
• Description: TXRX/REGISTER 16BIT 3ST 56TSSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74ACTQr

Specifications of 74ACTQ16543MTD

• Logic Type: Transceiver, Non-Inverting
• Number Of Elements: 1
• Number Of Bits Per Element: 16
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Connection Diagram
Pin Assignment for SSOP and TSSOP
2
Functional Description
The ACTQ16543 contains sixteen non-inverting transceiv-
ers with 3-STATE outputs. The device is byte controlled
with each byte functioning identically, but independent of
the other. The control pins may be shorted together to
obtain full 16-bit operation. The following description
applies to each byte. For data flow from A to B, for exam-
ple, the A-to-B Enable (CEAB
order to enter data from A
as indicated in the Data I/O Control Table. With CEAB
LOW, a LOW signal on the A-to-B Latch Enable (LEAB
input makes the A-to-B latches transparent; a subsequent
LOW-to-HIGH transition of the LEAB
latches in the storage mode and their outputs no longer
change with the A inputs. With CEAB
LOW, the 3-STATE B output buffers are active and reflect
the data present at the output of the A latches. Control of
data flow from B to A is similar, but using the CEBA
LEBA
Data I/O Control Table
H
L
X
A-to-B data flow shown; B-to-A flow control
is the same, except using CEBA
CEAB
LOW Voltage Level
HIGH Voltage Level
Immaterial
H
X
X
L
L
n
and OEBA
n
LEAB
Inputs
X
H
X
X
L
n
n
inputs.
OEAB
X
X
X
H
L
n
, LEBA
0
–A
n
15
n
n
Latch Status
) input must be LOW in
or take data from B
and OEBA
Transparent
(Byte n)
Latched
Latched
—
—
n
n
signal puts the A
n
and OEAB
(Byte n)
Buffers
Output
Driving
High Z
High Z
0
n
—
—
–B
both
15
n
n
n
)
,
,