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PDF HD74LVC2244A Data sheet ( Hoja de datos )
| Número de pieza | HD74LVC2244A | |
| Descripción | Octal Buffers / Line Drivers | |
| Fabricantes | Hitachi Semiconductor | |
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HD74LVC2244A
Octal Buffers / Line Drivers with 3–state Outputs
ADE-205-234 (Z)
Preliminary
1st. Edition
December 1998
Description
The HD74LVC2244A has eight line drivers with three state outputs in a 20 pin package. This device is a
noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four
buffers.
All outputs, which are designed to sink up to 12 mA, include equivalent 26 Ω resistors to reduce overshoot
and undreshoot.
When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power
down.
Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and
low power consumption extends the life of a battery for long time operation.
Features
• VCC = 1.65 to 5.5 V
• All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)
• All outputs VO (Max) = 5.5 V (@VCC = 0 V or output off state)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±12 mA (@VCC = 3.0 to 5.5 V)
• All outputs have equivalent 26 Ω series resistors, so no external resistors are required
1 page  
HD74LVC2244A
Electrical Characteristics (Ta = –40 to 85°C)
Item
Input voltage
Symbol VCC (V) Min Typ
VIH 1.65 to 1.95 VCC×0.65 —
2.3 to 2.7 1.7
—
Max
—
—
Unit Test Conditions
V
2.7 to 3.6 2.0
——
4.5 to 5.5 VCC×0.7 — —
VIL 1.65 to 1.95 — — VCC×0.35
2.3 to 2.7 —
— 0.7
2.7 to 3.6 —
— 0.8
Output voltage
4.5 to 5.5 —
— VCC×0.3
VOH 1.65 to 5.5 VCC–0.2 — —
V IOH = –100 µA
1.65 1.2 — —
IOH = –2 mA
2.3 1.7 — —
IOH = –4 mA
2.7 2.2 — —
3.0 2.4 — —
2.7 2.0 — —
3.0 2.0 — —
4.5 3.6 — —
IOH = –6 mA
IOH = –8 mA
IOH = –12 mA
VOL 1.65 to 5.5 —
1.65 —
2.3 —
2.7 —
— 0.2
— 0.45
— 0.7
— 0.4
IOL = 100 µA
IOL = 2 mA
IOL = 4 mA
3.0 — — 0.55
2.7 — — 0.6
3.0 — — 0.8
4.5 — — 0.8
IOL = 6 mA
IOL = 8 mA
IOL = 12 mA
Input current
I IN
Off state output current IOZ
Output leak current IOFF
Quiescent supply
I CC
current
∆ I CC
0 to 5.5 —
1.65 to 5.5 —
0—
1.65 to 3.6 —
1.65 to 5.5 —
2.7 to 3.6 —
— ±5
— ±5
— ±5
— 10
— 10
— 500
Input capacitance
CIN 3.3
—
Output capacitance CO
3.3
—
Note: 1. This applies in the disabled state only.
TBD —
TBD —
µA VIN = 0 to 5.5 V
µA VOUT = 0 to 5.5 V
µA VIN or VO = 5.5 V
µA VIN = 3.6 to 5.5 V *1, IO = 0
VIN = VCC or GND
VIN = one input at (VCC–
0.6)V,
other inputs at VCC or GND
pF VIN = VCC or GND
pF VOUT = VCC or GND
5
5 Page 
Package Dimensions
12.6
13 Max
20 11
1 10
0.80 Max
1.27
0.42 ± 0.08
0.40 ± 0.06
0.15
0.12 M
Dimension including the plating thickness
Base material dimension
HD74LVC2244A
Unit : mm
7.80
+
–
0.20
0.30
1.15
0.70 ± 0.20
0° – 8°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DA
—
Conforms
0.31 g
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet HD74LVC2244A.PDF ] | |
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