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TC74LVX273F/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LVX273F,TC74LVX273FT
Octal D-Type Flip-Flop with Clear
The TC74LVX273F/ FT is a high-speed CMOS octal D-flip flop fabricated with silicon gate CMOS technology. Designed for use in 3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. This device is suitable for low-voltage and battery operated systems. Information signals applied to D inputs are transferred to the Q outputs on the positive going edge of the clock pulse. When the CLR input is held low, the Q outputs are in the low logic level independent of the other inputs. An input protection circuit ensures that 0 to 5.5V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
TC74LVX273F
TC74LVX273FT
Features
* * * * * * * High-speed: fmax = 150 MHz (typ.) (VCC = 3 V) Low power dissipation: ICC = 4 A (max) (Ta = 25C) Input voltage level: VIL = 0.8 V (max) (VCC = 3 V) VIH = 2.0 V (min) (VCC = 3 V) Power-down protection provided on all inputs Balanced propagation delays: tpLH - tpHL Low niose: VOLP = 0.8 V (max) Pin and function compatible with 74HC273 Weight SOP20-P-300-1.27A TSSOP20-P-0044-0.65A : 0.22 g (typ.) : 0.08 g (typ.)
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TC74LVX273F/FT
Pin Assignment (top view) IEC Logic Symbol
(1) (11)
CLR Q1 D1 D2 Q2 Q3 D3 D4 Q4
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14
VCC Q8 D8 D7 Q7 Q6
CLR CK
R C1
D6 D5 Q5 CK
D1 D2 D3 D4 D5 D6 D7 D8
(3) (4) (7) (8) (13) (14) (17) (18)
1D
(2) (5) (6) (9) (12) (15) (16) (19)
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
13 12 11
GND 10
Truth Table
Inputs Outputs CK X Q L L H Qn
CLR
L H H H
D X L H X
Function Clear No change
X: Don't care
System Diagram
D1 3 DR D2 4 DR D3 7 DR D4 8 DR D5 13 DR D6 14 DR D7 17 DR D8 18 DR
CLR
1
CK CK 11
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
CK
Q
2 Q1
5 Q2
6 Q3
9 Q4
12 Q5
15 Q6
16 Q7
19 Q8
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TC74LVX273F/FT
Absolute Maximum Ratings (Note)
Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT ICC PD Tstg Rating
-0.5 to 7.0 -0.5 to 7.0 -0.5 to VCC + 0.5 -20 20 25 75
Unit V V V mA mA mA mA mW C
180
-65 to 150
Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/"Derating Concept and Methods") and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
Operating Ranges (Note)
Characteristics Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time Symbol VCC VIN VOUT Topr dt/dv Rating 2.0 to 3.6 0 to 5.5 0 to VCC
-40 to 85
Unit V V V C ns/V
0 to 100
Note: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND.
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TC74LVX273F/FT
Electrical Characteristics
DC Characteristics
Characteristics Symbol Test Condition VCC (V) 2.0 H-level Input voltage L-level VIL

Ta = 25C Min 1.5 2.0 2.4

Ta = -40 to 85C Max

Unit
Typ.

Min 1.5 2.0 2.4

Max

VIH
3.0 3.6 2.0 3.0 3.6
0.5 0.8 0.8

0.5 0.8 0.8

V
H-level Output voltage L-level
VOH
IOH = -50 A VIN = VIH IOH = -50 A or VIL IOH = -4 mA VIN = VIH IOL = 50 A or VIL IOL = 4 mA VIN = 5.5 V or GND VIN = VCC or GND IOL = 50 A
2.0 3.0 3.0 2.0 3.0 3.0 3.6 3.6
1.9 2.9 2.58

2.0 3.0
1.9 2.9 2.48

0 0

0.1 0.1 0.36
0.1
0.1 0.1 0.44
1.0
V
VOL
Input leakage current Quiescent supply current
IIN ICC
A A
4.0
40.0
Timing Requirements (input: tr = tf = 3 ns)
Characteristics Symbol Test Condition VCC (V) Minimum pulse width (CK) Minimum pulse width ( CLR ) Minimum set-up time tW (L) tW (H) tW (L)
Ta = 25C Limit 8.0 5.5 7.5 5.0 8.0 5.5 1.0 1.0 4.0 2.5
Ta = -40 to 85C Limit 9.5 6.5 8.5 6.0 9.5 6.5 1.0 1.0 4.0 2.5
Unit
2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3
ns
ns
ts
ns
Minimum hold time Minimum removal time ( CLR )
th
ns
trem
ns
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TC74LVX273F/FT
AC Characteristics (input: tr = tf = 3 ns)
Characteristics Symbol Test Condition VCC (V) tpLH
Ta = 25C CL (pF) 15 50 15 50 15 50 15 50 15 50 15 50 50 50 (Note 2) (Note 3) Min

Ta = -40 to 85C Max 16.9 20.4 11.0 14.5 17.6 21.1 11.5 15.0

Unit
Typ. 9.0 11.5 7.1 9.6 9.3 11.8 7.3 9.8 110 60 150 90

Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 45 40 80 50

Max 20.5 24.0 13.0 16.5 20.5 24.0 13.5 17.0

Propagation delay time (CK-Q)
2.7
ns
tpHL
3.3 0.3
Propagation delay time ( CLR -Q)
2.7 tpHL
ns
3.3 0.3
2.7 Maximum clock frequency fmax
55 45 95 60

MHz
3.3 0.3 tosLH tosHL CIN CPD 2.7 3.3 0.3
Output to output skew Input capacitance Power dissipation capacitance
(Note 1)
1.5 1.5 10
1.5 1.5 10
ns pF pF
4 31
Note 1: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Note 2: Parameter guaranteed by design. Note 3: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption. Average operating current can be obtained by the equation: ICC (opr) = CPDVCCfIN + ICC/8 (per F/F) And the total CPD when n pcs. of F/F operate can be gained by the following equation: CPD (total) = 22 + 9n
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TC74LVX273F/FT
Noise Characteristics (Ta = 25C, input: tr = tf = 3 ns, CL = 50 pF)
Characteristics Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Minimum high level dynamic input voltage VIH Maximum low level dynamic input voltage VIL Symbol VOLP VOLV VIHD VILD Test Condition

VCC (V) 3.3 3.3 3.3 3.3
Typ. 0.5
-0.5
Limit 0.8
-0.8
Unit V V V V
2.0 0.8
Input Equivalent Circuit
INPUT
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TC74LVX273F/FT
Package Dimensions
Weight: 0.22 g (typ.)
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TC74LVX273F/FT
Package Dimensions
Weight: 0.08 g (typ.)
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TC74LVX273F/FT
RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
20070701-EN GENERAL
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer's own risk. * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. * Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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