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PDF HD74LV373A Data sheet ( Hoja de datos )
| Número de pieza | HD74LV373A | |
| Descripción | Octal D-type Transparent Latches with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HD74LV373A (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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HD74LV373A
Octal D-type Transparent Latches with 3-state Outputs
ADE-205-274 (Z)
1st Edition
April 1999
Description
The HD74LV373A has eight D type latches with three state outputs in a 20 pin package. When the latch
enables input is high, the Q outputs will follow the D inputs. When the latch enables goes low, data at the
D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is
applied to the output control input, all outputs go to a high impedance state, regardless of what signals are
present at the other inputs and the state of the storage elements. Low-voltage and high-speed operation is
suitable for the 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 ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)
Function Table
Inputs
OE LE
D
Output Q
HXXZ
L HL L
L HHH
L L X Q0
Note: H: High level
L: Low level
X: Immaterial
Z: High impedance
Q0: Output level before the indicated steady state input conditions were established.
1 page  
HD74LV373A
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 = –8 mA
IOH = –16 mA
IOL = 50 µA
Input current
Off-state
output current
IIN
IOZ
2.3
3.0
4.5
0 to 5.5
5.5
—
—
—
—
—
— 0.4
IOL = 2 mA
— 0.44
IOL = 8 mA
— 0.55
IOL = 16 mA
— ±1
µA VIN = 5.5 V or GND
— ±5
µA VO = VCC or GND
Quiescent
supply current
ICC
5.5 —
— 20
µA VIN = VCC or GND, IO = 0
Output leakage IOFF
0
—
—5
current
µA VI or VO = 0 to 5.5 V
Input
CIN 3.3 —
capacitance
2.9 —
pF VI = VCC or GND
Note: For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
5
5 Page 
HD74LV373A
• Waveform – 1
Input LE
Input D
Output Q
tr tf
10%
tr
90% 90%
50%VCC
10%
tf
90%
90%
Vref
10%
tPLH
10%
tPHL
50%VCC
50%VCC
• Waveform – 2
tr
Input LE
90%
10%
tr
Input D
10%
90%
50%VCC
tPLH
Output Q
Vref
tf
90%
50%VCC
10%
tPHL
Vref
VCC
GND
VCC
GND
VOH
VOL
VCC
GND
VCC
GND
VOH
VOL
• Waveform – 3
Input LE
Input D
10%
tr tf
90% 90%
50% 50%
VCC tw VCC
tsu
10%
th
50%VCC
50%VCC
VCC
GND
VCC
GND
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet HD74LV373A.PDF ] | |
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