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PDF HD74LVCR2245A Data sheet ( Hoja de datos )
| Número de pieza | HD74LVCR2245A | |
| Descripción | Octal Bidirectional Transceivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
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HD74LVCR2245A
Octal Bidirectional Transceivers with 3–state Outputs
ADE-205-235A (Z)
Preliminary
2nd. Edition
January 1999
Description
The HD74LVCR2245A has eight buffers with three state outputs in a 20 pin package. When (T / R) is
high, data flows from the A inputs to the B outputs, and when (T / R) is low, data flows from the B inputs
to the A outputs. A and B bus are separated by making enable input (OE) high level.
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 inputs / outputs VI / O (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  
HD74LVCR2245A
Electrical Characteristics (Ta = –40 to 85°C)
Item
Input voltage
Symbol VCC (V)
Min
Typ Max
VIH 1.65 to 1.95 VCC×0.65 — —
2.3 to 2.7 1.7
——
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
I OFF
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 —
Input capacitance CIN 3.3
—
Output capacitance CO
3.3
—
Note: 1. This applies in the disabled state only.
— ±5
— ±5
— ±5
— 10
— 10
— 500
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
HD74LVCR2245A
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 13 Páginas | |
| PDF Descargar | [ Datasheet HD74LVCR2245A.PDF ] | |
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