HITACHI HD74LVCR2245A

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 V I / O (Max) = 5.5 V (@V CC = 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 (@V CC = 3.0 to 5.5 V)
• All outputs have equivalent 26 Ω series resistors, so no external resistors are required
HD74LVCR2245A
Function Table
Inputs
Operation
OE
T/R
L
L
B data to A bus
L
H
A data to B bus
H
X
Z
H : High level
L : Low level
X : Immaterial
Z : High impedance
Pin Arrangement
T/R
1
20 VCC
A0
2
19 OE
A1
3
18 B0
A2 4
17 B1
A3
5
16 B2
A4
6
15 B3
A5
7
14 B4
A6
8
13 B5
A7
9
12 B6
GND 10
11 B7
(Top view)
2
HD74LVCR2245A
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
VCC
–0.5 to 7.0
V
Input voltage
VI
–0.5 to 7.0
V
Output voltage
VO
–0.5 to 7.0
V
–0.5 to VCC+0.5
Conditions
Output “Z” or VCC : OFF
Output “H” or “L”
Input diode current
I IK
–50
mA
VI < 0
Output diode current
I OK
–50
mA
VO < 0
Output current
IO
±50
mA
VCC, GND current
I CC or IGND
±100
mA
Storage temperature
Tstg
–65 to 150
°C
Note: The absolute maximum ratings are values which must not individually be exceeded, and furthermore
no two of which may be realized at the same time.
Recommended Operating Conditions
Item
Symbol
Ratings
Unit
Conditions
Supply voltage
VCC
1.65 to 5.5
V
At operation
1.5 to 5.5
Data retention only
Input voltage
VI
0 to 5.5
V
Output voltage
VO
0 to 5.5
V
0 to V CC
Output current
I OH
I OL
–2
Output “Z” or VCC : OFF
Output “H” or “L”
mA
VCC = 1.65 V
–4
VCC = 2.3 V
–8
VCC = 2.7 V
–12
VCC = 3.0 to 5.5 V
2
VCC = 1.65 V
4
VCC = 2.3 V
8
VCC = 2.7 V
12
VCC = 3.0 to 5.5 V
Input rise / fall time
t r, t f
0 to 6
ns / V
Operating temperature
Ta
–40 to +85
°C
3
HD74LVCR2245A
Logic Diagram
T/R
1
19
A0
2
18
To seven other channels
4
OE
B0
HD74LVCR2245A
Electrical Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V)
Input voltage
VIH
Max
Unit Test Conditions
1.65 to 1.95 VCC×0.65 —
—
V
2.3 to 2.7
1.7
—
—
2.7 to 3.6
2.0
—
—
4.5 to 5.5
VCC×0.7
—
—
1.65 to 1.95 —
—
VCC×0.35
2.3 to 2.7
—
—
0.7
2.7 to 3.6
—
—
0.8
4.5 to 5.5
—
—
VCC×0.3
1.65 to 5.5 VCC–0.2
—
—
1.65
1.2
—
—
I OH = –2 mA
2.3
1.7
—
—
I OH = –4 mA
2.7
2.2
—
—
3.0
2.4
—
—
I OH = –6 mA
2.7
2.0
—
—
I OH = –8 mA
3.0
2.0
—
—
I OH = –12 mA
4.5
3.6
—
—
1.65 to 5.5 —
—
0.2
I OL = 100 µA
1.65
—
—
0.45
I OL = 2 mA
2.3
—
—
0.7
I OL = 4 mA
2.7
—
—
0.4
3.0
—
—
0.55
I OL = 6 mA
2.7
—
—
0.6
I OL = 8 mA
3.0
—
—
0.8
I OL = 12 mA
4.5
—
—
0.8
0 to 5.5
—
—
±5
µA
VIN = 0 to 5.5 V
Off state output current I OZ
1.65 to 5.5 —
—
±5
µA
VOUT = 0 to 5.5 V
Output leak current
I OFF
0
—
—
±5
µA
VIN or VO = 5.5 V
Quiescent supply
I CC
1.65 to 3.6 —
—
10
µA
VIN = 3.6 to 5.5 V *1 , I O = 0
1.65 to 5.5 —
—
10
VIN = VCC or GND
∆I CC
2.7 to 3.6
—
—
500
VIN = one input at (VCC–0.6)V,
other inputs at V CC or GND
Input capacitance
CIN
3.3
—
TBD —
pF
VIN = VCC or GND
Output capacitance
CO
3.3
—
TBD —
pF
VOUT = VCC or GND
VIL
Output voltage
VOH
VOL
Input current
I IN
current
Note:
Min
Typ
V
I OH = –100 µA
1. This applies in the disabled state only.
5
HD74LVCR2245A
Switching Characteristics (Ta = –40 to 85°C)
Item
Symbol
VCC (V)
Propagation delay time
t PLH
t PHL
Output enable time
Output disable time
Between output pin skew
*1
Min
Typ
Max
Unit
FROM
(Input)
TO
(Output)
1.8±0.15 —
—
15.0
ns
A or B
B or A
2.5±0.2
—
—
9.0
2.7
—
—
7.3
3.3±0.3
1.5
—
6.3
5.0±0.5
—
—
4.8
t ZH
1.8±0.15 —
—
18.0
ns
OE
A or B
t ZL
2.5±0.2
—
—
11.0
2.7
—
—
9.5
3.3±0.3
1.5
—
8.2
5.0±0.5
—
—
6.8
t HZ
1.8±0.15 —
—
16.0
ns
OE
A or B
t LZ
2.5±0.2
—
—
10.0
2.7
—
—
8.5
3.3±0.3
1.7
—
7.8
5.0±0.5
—
—
6.6
t OSLH
1.8±0.15 —
—
2.0
t OSHL
2.5±0.2
—
—
2.0
2.7
—
—
1.5
3.3±0.3
—
—
1.0
5.0±0.5
—
—
1.0
Note : 1. This parameter is characterized but not tested.
t OSLH = |tPLHm–t PLHn |, tOSHL = |tPHLm–t PHLn |
6
ns
HD74LVCR2245A
Test Circuit
(V CC = 1.8±0.15 V, VCC = 2.5±0.2 V)
VCC
VCC
Pulse generator
Zout = 50 Ω
See Function Table
OE
Input
Output
A0
S1
R1
S2
B0
2×VCC
R2
CL =
30 pF
GND
50 Ω Scope
T/R
VCC (V)
R1
R2
1.8±0.15
1 kΩ
950 Ω
2.5±0.2
500 Ω
450 Ω
OPEN
S2
Symbol
t PLH / t PHL
OPEN
t ZH / t HZ
t ZL / t LZ
GND
2×VCC
Note: 1. C L includes probe and jig capacitance.
7
HD74LVCR2245A
(V CC = 2.7 V, VCC = 3.3±0.3 V, VCC = 5.0±0.5 V)
VCC
VCC
Pulse generator
Zout = 50 Ω
See Function Table
OE
Input
Output
A0
S1
500 Ω S2
B0
CL =
50 pF
T/R
Note: 1. C L includes probe and jig capacitance.
8
See
under table
GND
450 Ω
50 Ω Scope
Symbol
OPEN
*1
S2
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
t PLH / t PHL
OPEN
OPEN
t ZH / t HZ
t ZL / t LZ
GND
6V
GND
2×VCC
HD74LVCR2245A
(V CC = 1.8±0.15 V, VCC = 2.5±0.2 V)
• Waveforms – 1
tr
Input
10 %
tf
90 %
50% VCC
VCC
90 %
50% VCC
10 %
t PHL
t PLH
GND
VOH
In phase output
50% VCC
50% VCC
VOL
• Waveforms – 2
tf
tr
90 %
OE
50% VCC
10 %
t ZL
VCC
90 %
50% VCC
10 %
GND
t LZ
≈VCC
Waveform – A
50% VCC
t ZH
Waveform – B
50% VCC
VOL + 0.15 V
t HZ
VOH – 0.15 V
VOL
VOH
≈GND
Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, t r = 2.0 ns, t f = 2.0 ns
2. Waveform – A shows input conditions such that the output is “L” level
when enabled by the output control.
3. Waveform – B shows input conditions such that the output is “H” level
when enabled by the output control.
9
HD74LVCR2245A
(V CC = 2.7 V, VCC = 3.3±0.3 V, VCC = 5.0±0.5 V)
• Waveforms – 1
tr
tf
90 %
Input
VIH
90 %
Vref
Vref
10 %
10 %
GND
t PHL
t PLH
VOH
In phase output
Vref
Vref
VOL
• Waveforms – 2
tf
OE
tr
90 %
Vref
VIH
90 %
Vref
10 %
t ZL
10 %
GND
t LZ
≈VOH1
Waveform – A
Vref
t ZH
Waveform – B
Vref
VOL + 0.3 V
VOL
t HZ
VOH
VOH – 0.3 V
≈VOL1
TEST
VIH
Vcc=2.7V
3.3±0.3V
Vcc=5.0±0.5V
2.7 V
1.5 V
VOH1
3V
VCC
50%VCC
VCC
VOL1
GND
GND
Vref
Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, t r = 2.5 ns, t f = 2.5 ns
2. Waveform – A shows input conditions such that the output is “L” level
when enabled by the output control.
3. Waveform – B shows input conditions such that the output is “H” level
when enabled by the output control.
10
HD74LVCR2245A
Package Dimensions
Unit : mm
12.6
13 Max
11
1
10
1.27
0.42 ± 0.08
0.40 ± 0.06
0.10 ± 0.10
0.80 Max
0.22 ± 0.05
0.20 ± 0.04
2.20 Max
5.5
20
0.20
7.80 +– 0.30
1.15
0° – 8°
0.70 ± 0.20
0.15
0.12 M
Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DA
—
Conforms
0.31 g
11
HD74LVCR2245A
6.50
6.80 Max
11
1
10
4.40
20
0.65
0.22 +0.08
–0.07
0.20 ± 0.06
1.0
0.13 M
6.40 ± 0.20
Dimension including the plating thickness
Base material dimension
12
0.07 +0.03
–0.04
0.10
0.17 ± 0.05
0.15 ± 0.04
1.10 Max
0.65 Max
0° – 8°
0.50 ± 0.10
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
TTP-20DA
—
—
0.07 g
Cautions
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received the latest product standards or specifications before final design, purchase or use.
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contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
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