74LCX16821MTDX Fairchild Semiconductor, 74LCX16821MTDX Datasheet - Page 2

• Manufacturer Part Number: 74LCX16821MTDX
• Description: IC FLIP FLOP 20BIT D LV 56TSSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74LCXr
• Type: D-Type Busr

Specifications of 74LCX16821MTDX

• Function: Standard
• Output Type: Tri-State Non Inverted
• Number Of Elements: 2
• Number Of Bits Per Element: 10
• Frequency - Clock: 150MHz
• Delay Time - Propagation: 6.2ns
• Trigger Type: Positive Edge
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 2 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
Functional Description
The LCX16821 contains twenty D-type flip-flops with 3-
STATE standard 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
20-bit operation. The following description applies to each
byte. The twenty flip-flops will store the state of their indi-
vidual D inputs that meet the setup and hold time require-
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.
2
Truth Tables
H
L
X
Z

O
ments on the LOW-to-HIGH Clock (CLK) transition. The 3-
STATE standard outputs are controlled by the Output
Enable (OE
puts are in the 2-state mode. When OE
dard outputs are in the high impedance mode but this does
not interfere with entering new data into the flip-flops.
0
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial
Previous O
LOW-to-HIGH transition
L or H
L or H
CLK
CLK




X
X
2
1
n
) input. When OE
0
before LOW
Inputs
Inputs
OE
OE
H
L
L
L
H
L
L
L
2
1
-
to-HIGH transition of Clock
n
D
is LOW, the standard out-
D
10
0
–D
X
L
H
X
H
–D
X
L
X
19
9
n
is HIGH, the stan-
Outputs
O
Outputs
O
10
0
O
O
H
–O
Z
L
H
–O
Z
L
0
0
9
19