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PDF HD74LV273A Data sheet ( Hoja de datos )
| Número de pieza | HD74LV273A | |
| Descripción | Octal D-type Flip-Flops with Clear | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74LV273A
Octal D-type Flip-Flops with Clear
ADE-205-273 (Z)
1st Edition
April 1999
Description
The HD74LV273A has eight edge trigger D-type flip-flops with clear in a 20-pin package. Data on the D
input having the specified setup and hold times is transferred to the Q output on the low to high transition
of the clock input. The clear input when low, sets all outputs to a low state. Low-voltage and high-speed
operation is suitable for battery-powered products (e.g., notebook computers), and the low-power
consumption extends the battery life.
Features
• VCC = 2.0 V to 5.5 V operation
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)
• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)
Function Table
Inputs
CLR
CLK
D
Output Q
L XXL
H↑ HH
H↑ L L
H
Note:
↓ X Q0
H: High level
L: Low level
X: Immaterial
↑: Low to high transition
↓: High to low transition
Q0: Output level before the indicated steady state input conditions were established.
1 page  
HD74LV273A
DC Electrical Characteristics
• Ta = –40 to 85°C
Item
Symbol
Input voltage
VIH
VIL
Output voltage VOH
VCC (V)*
2.0
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
Min to
Max
Min
1.5
VCC × 0.7
VCC × 0.7
VCC × 0.7
—
—
—
—
VCC – 0.1
Typ
—
—
—
—
—
—
—
—
—
Max
—
—
—
—
0.5
VCC × 0.3
VCC × 0.3
VCC × 0.3
—
Unit Test Conditions
V
V IOH = –50 µA
2.3 2.0
—
3.0 2.48 —
4.5 3.8
—
VOL
Min to
—
Max
—
—
—
—
0.1
IOH = –2 mA
IOH = –6 mA
IOH = –12 mA
IOL = 50 µA
Input current
Quiescent
supply current
IIN
ICC
2.3
3.0
4.5
0 to 5.5
5.5
—
—
—
—
—
— 0.4
IOL = 2 mA
— 0.44
IOL = 6 mA
— 0.55
IOL = 12 mA
— ±1
µA VI = 5.5 V or GND
— 20
µA VI = VCC or GND, IO = 0
Output leakage IOFF
0
—
—5
current
µA VI or VO = 0 V to 5.5 V
Input
CIN 3.3 — 2 — pF VI = VCC or GND
capacitance
Note: For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
5
5 Page 
• Waveform-1
Timing input
Data input
Input
HD74LV273A
tr
10 %
tsu
90 %
50 % VCC
th
tf
90 %
50 % VCC
10 %
50 % VCC
50 % VCC
tw
50 % VCC
50 % VCC
VCC
0V
VCC
0V
VCC
0V
• Waveform-2
Input
tr
10 %
90 %
50 % VCC
tPLH
tf
90 %
50 % VCC
10 %
tPHL
In phase output
Out of phase output
tPHL
50 % VCC
50 % VCC
50 % VCC
tPLH
50 % VCC
VCC
0V
VOH
VOL
VOH
VOL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns
2. The output is measured one at a time with one transition per measurement.
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet HD74LV273A.PDF ] | |
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