74ALVCH162373T Fairchild Semiconductor, 74ALVCH162373T Datasheet - Page 2

• Manufacturer Part Number: 74ALVCH162373T
• Description: IC LATCH TRANSP 16BIT LV 48TSSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74ALVCHr

Specifications of 74ALVCH162373T

• Logic Type: D-Type Transparent Latch
• Circuit: 8:8
• Output Type: Tri-State
• Voltage - Supply: 1.65 V ~ 3.6 V
• Independent Circuits: 2
• Delay Time - Propagation: 1ns
• Current - Output High, Low: 12mA, 12mA
• 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
Functional Description
The 74ALVCH162373 contains sixteen edge D-type
latches with 3-STATE outputs. The device is byte controlled
with each byte functioning identically, but independent of
the other. Control pins can be shorted together to obtain full
16-bit operation. The following description applies to each
byte. When the Latch Enable (LE
the I
transparent, i.e., a latch output will change state each time
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
n
enters the latches. In this condition the latches are
n
) input is HIGH, data on
2
Truth Tables
H
L
X
Z
O
its I input changes. When LE
information that was present on the I inputs a setup time
preceding the HIGH-to-LOW transition on LE
STATE outputs are controlled by the Output Enable (OE
input. When OE
state mode. When OE
in the high impedance mode but this does not interfere with
entering new data into the latches.
0
Previous O
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial (HIGH or LOW, control inputs may not float)
LE
LE
X
H
H
X
H
H
L
L
0
1
2
before HIGH-to-LOW of Latch Enable
n
is LOW the standard outputs are in the 2-
Inputs
Inputs
OE
OE
n
H
H
L
L
L
L
L
L
is HIGH, the standard outputs are
1
2
n
is LOW, the latches store
I
I
8
0
–I
X
H
X
X
H
X
–I
L
L
15
7
Outputs
Outputs
O
O
8
0
O
O
–O
Z
H
Z
H
–O
L
L
n
0
0
. The 3-
15
7
n
)