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Diodes |
74LVC273A
OCTAL D-TYPE FLIP-FLOP WITH CLEAR
Description
The 74LVC273A provides eight positive-edge-triggered D-type flip-
flops with a direct clear (CLR) input.
The device is designed for operation with a power supply range of
1.65V to 3.6V. The device is fully specified for partial power down
applications using IOFF. The IOFF circuitry disables the output preventing
damaging current backflow when the device is powered down.
Features
• Supply Voltage Range from 1.65V to 3.6V
• Sinks or Sources 24mA at VCC = 3V
• CMOS Low Power Consumption
• IOFF Supports Partial Power Down Operation
• Inputs or Outputs accept up to 5.5V
• Inputs Can Be Driven by 3.3V or 5V Allowing for Mixed Voltage
Applications
• Schmitt Trigger Action at All Inputs
• Typical VOLP (Quiet Output Ground Bounce) less than 0.8V with
VCC = 3.3V and TA = +25°C
• Typical VOHV (Quiet Output dynamic VOH) greater than 2.0V with
VCC = 3.3V and TA = +25°C
• ESD Protection Tested per JESD 22
Exceeds 200-V Machine Model (A115-A)
Exceeds 2000-V Human Body Model (A114-A)
Exceeds 1000-V Charged Device Model (C101C)
• Latch-Up Exceeds 250mA per JESD 78, Class II
• All devices are:
Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
Applications
• General Purpose Logic
• Bus Driving
• Power Down Signal Isolation
• Wide array of products such as:
PCs, Notebooks, Netbooks, Ultrabooks
Networking Computer Peripherals, Hard Drives, CD/DVD
ROM
TV, DVD, DVR, Set Top Box
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free,
"Green" and Lead-Free.
3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
74LVC273A
Document number: DS35892 Rev. 1 - 2
1 of 10
www.diodes.com
June 2014
© Diodes Incorporated
74LVC273A
Ordering Information
74 LVC 273A xxx -13
Logic Device
74 : Logic Prefix
273 :
Function
Octal D-Type
Flip-Flop with
Clear
Package
T20 : TSSOP-20
Q20 : QFN-20
Packing
-13 : 13” Tape & Reel
Device
74LVC273AT20-13
74LVC273AQ20-13
Package
Code
T20
Q20
Package
(Note 4 & 5)
TSSOP-20
V-QFN4525-20
Package
Size
6.4mm X 6.5mm X 1.2mm
0.65 mm lead pitch
2.5mm X 4.5mm X 0.95mm
0.50 mm lead pitch
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
Notes:
4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
5. V-QFN4525-20 is a JEDEC recognized naming convention that specifies the package thickness category as V and the number 4525 describes the
package as 4.5mm X 2.5mm.
Pin Descriptions
Pin
Number
Pin Name
1 CLR
2 Q1
3 D1
4 D2
5 Q2
6 Q3
7 D3
8 D4
9 Q4
10 GND
11 CLK
12 Q5
13 D5
14 D6
15 Q6
16 Q7
17 D7
18 D8
19 Q8
20 Vcc
Description
Clear
Latch Output
Data Input
Data Input
Latch Output
Latch Output
Data Input
Data Input
Latch Output
Ground
Clock
Latch Output
Data Input
Data Input
Latch Output
Latch Output
Data Input
Data Input
Latch Output
Supply Voltage
Logic Diagram
Function Table
(Each Flip-Flop)
INPUTS
OUTPUT
CLR CLK
D
Q
L XX
H↑H
L
H
H↑L
L
HLX
Q0
74LVC273A
Document number: DS35892 Rev. 1 - 2
2 of 10
www.diodes.com
June 2014
© Diodes Incorporated
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