74VCX16839MTD Fairchild Semiconductor, 74VCX16839MTD Datasheet - Page 2

• Manufacturer Part Number: 74VCX16839MTD
• Description: IC RGSTR BUFF 20BIT LV 56TSSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74VCXr

Specifications of 74VCX16839MTD

• Logic Type: Buffer/Line Driver, Non-Inverting
• Number Of Elements: 1
• Number Of Bits Per Element: 20
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 1.65 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 56-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Connection Diagram
Logic Diagram
2
Truth Table
H
L
X
Z
Functional Description
The 74VCX16839 consists of twenty selectable non-invert-
ing buffers or registers with word wide modes. Mode func-
tionality is selected through operation of the CLK and
REGE pin as shown by the truth table. When REGE is held
at a logic HIGH the device operates as a 20-bit register.
Data is transferred from I
CLK input. When the REGE pin is held at a logic LOW the
device operates in a flow through mode and data propa-
gates directly from the I
be 3-stated by holding the OE pin at a logic HIGH.
Logic LOW
High Impedance
LOW-to-HIGH Clock Transition
Logic HIGH
Don’t Care, but not floating
CLK
X
X
X
REGE
H
H
X
L
L
Inputs
n
to the O
n
to O
I
H
H
X
L
L
n
n
n
on the rising edge of the
outputs. All outputs can
OE
H
L
L
L
L
Outputs
O
H
H
Z
L
L
n