HITACHI HD74LV245A

HD74LV245A
Octal Bus Transceivers with 3-state Outputs
ADE-205-247 (Z)
1st Edition
March 1999
Description
The HD74LV245A has eight buffers with three-state outputs in a 20-pin package. When DIR is high, data
is transferred from the A inputs to the B outputs, and when DIR is low, data is transferred from the B inputs
to the A outputs. The A and B buses are separated by making the enable input (OE) high level. Lowvoltage 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 ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)
Function Table
Inputs
OE
DIR
Operation
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
Note: H: High level
L: Low level
X: Immaterial
HD74LV245A
Pin Arrangement
DIR 1
20 VCC
A1
2
19 OE
A2
3
18 B1
A3 4
17 B2
A4
5
16 B3
A5
6
15 B4
A6
7
14 B5
A7
8
13 B6
A8
9
12 B7
GND 10
11 B8
(Top view)
2
HD74LV245A
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage range*
1
1,
Output voltage range* *
2
Symbol
Ratings
Unit
VCC
–0.5 to 7.0
V
VI
–0.5 to 7.0
V
VO
–0.5 to VCC + 0.5
V
–0.5 to 7.0
Conditions
Output: H or L
VCC: OFF or Output: Z
Input clamp current
I IK
–20
mA
VI < 0
Output clamp current
I OK
±50
mA
VO < 0 or VO > VCC
Continuous output current
IO
±35
mA
VO = 0 to VCC
Continuous current through
VCC or GND
I CC or IGND
±70
mA
Maximum power dissipation
at Ta = 25°C (in still air)*3
PT
835
mW
757
Storage temperature
Tstg
–65 to 150
SOP
TSSOP
°C
Notes: 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..
1. The input and output voltage ratings may be exceeded even if the input and output clamp-current
ratings are observed.
2. This value is limited to 5.5 V maximum.
3. The data above are measured by ∆V BE method mounting on glass epoxy board (40 × 40 × 1.6
mm) with 10% of wiring density.
3
HD74LV245A
Recommended Operating Conditions
Item
Symbol
Min
Max
Unit
Supply voltage range
VCC
2.0
5.5
V
Input voltage range
VI
0
5.5
V
Output voltage range
VO
0
VCC
V
0
5.5
—
–50
µA
VCC = 2.0 V
—
–2
mA
VCC = 2.3 to 2.7 V
—
–8
VCC = 3.0 to 3.6 V
—
–16
VCC = 4.5 to 5.5 V
—
50
µA
VCC = 2.0 V
—
2
mA
VCC = 2.3 to 2.7 V
—
8
VCC = 3.0 to 3.6 V
—
16
VCC = 4.5 to 5.5 V
0
200
0
100
VCC = 3.0 to 3.6 V
0
20
VCC = 4.5 to 5.5 V
–40
85
Output current
I OH
I OL
Input transition rise or fall rate
Operating free-air temperature
∆t /∆v
Ta
Note: Unused or floating inputs must be held high or low.
4
Conditions
Output: H or L
High impedance state
ns/V
°C
VCC = 2.3 to 2.7 V
HD74LV245A
Logic Diagram
DIR
1
19
A1
OE
2
18
B1
Other seven channels
5
HD74LV245A
DC Electrical Characteristics
• Ta = –40 to 85°C
Item
Symbol
VCC (V)*1
Min
Typ
Max
Unit
Input voltage
VIH
2.0
1.5
—
—
V
2.3 to 2.7
VCC × 0.7
—
—
3.0 to 3.6
VCC × 0.7
—
—
4.5 to 5.5
VCC × 0.7
—
—
2.0
—
—
0.5
2.3 to 2.7
—
—
VCC × 0.3
3.0 to 3.6
—
—
VCC × 0.3
4.5 to 5.5
—
—
VCC × 0.3
Min to
Max
VCC –0.1
—
—
2.3
2.0
—
—
IOH = –2 mA
3.0
2.48
—
—
IOH = –8 mA
4.5
3.8
—
—
IOH = –16 mA
Min to
Max
—
—
0.1
IOL = 50 µA
2.3
—
—
0.4
IOL = 2 mA
3.0
—
—
0.44
IOL = 8 mA
4.5
—
—
0.55
IOL = 16 mA
0 to 5.5
—
—
±1
µA
VIN = 5.5 V or GND
5.5
—
—
±5
µA
VO = VCC or GND
VIL
Output voltage
VOH
VOL
Input current
IIN
2
V
Test Conditions
IOH = –50 µA
Off-state
output current
IOZ*
Quiescent
supply current
ICC
5.5
—
—
20
µA
VIN = VCC or GND, IO = 0
Output leakage
current
IOFF
0
—
—
5
µA
VO = 5.5 V
Input
capacitance
CIN
3.3
—
3.0
—
pF
VI = VCC or GND
Output
capacitance
CO
3.3
—
5.5
—
pF
VO = VCC or GND
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
2. For I/O ports, the parameter I OZ includes the input leakage current.
6
HD74LV245A
Switching Characteristics
• VCC = 2.5 ± 0.2 V
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol
Min
Typ
Max
Min
Max
Unit
Test Conditions
FROM
(Input)
TO
(Output)
Propagation
delay time
tPLH
tPHL
—
8.3
13.0
1.0
15.0
ns
CL = 15 pF
A or B
B or A
—
11.2
15.9
1.0
18.0
—
11.8
19.9
1.0
22.0
OE
A or B
—
14.1
22.7
1.0
26.0
—
11.8
18.1
1.0
20.0
OE
A or B
—
17.6
23.1
1.0
25.0
Enable time
Disable
time
tZH
tZL
tHZ
tLZ
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
• VCC = 3.3 ± 0.3 V
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol
Min
Typ
Max
Min
Max
Unit
Test Conditions
FROM
(Input)
TO
(Output)
Propagation
delay time
tPLH
tPHL
—
5.9
8.4
1.0
10.0
ns
CL = 15 pF
A or B
B or A
—
7.9
11.9
1.0
13.5
—
8.2
13.2
1.0
15.5
OE
A or B
—
9.9
16.7
1.0
19.0
—
9.6
16.5
1.0
19.5
OE
A or B
—
13.9
19.8
1.0
22.0
Enable time
Disable
time
tZH
tZL
tHZ
tLZ
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
7
HD74LV245A
Switching Characteristics (cont)
• VCC = 5.0 ± 0.5 V
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol
Min
Typ
Max
Min
Max
Unit
Test Conditions
FROM
(Input)
TO
(Output)
Propagation
delay time
tPLH
tPHL
—
4.3
5.5
1.0
6.5
ns
CL = 15 pF
A or B
B or A
—
5.6
7.5
1.0
8.5
—
5.7
8.5
1.0
10.0
OE
A or B
—
7.0
10.6
1.0
12.0
—
7.8
12.8
1.0
14.2
OE
A or B
—
10.9
14.7
1.0
16.0
Enable time
Disable
time
8
tZH
tZL
tHZ
tLZ
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
ns
CL = 15 pF
CL = 50 pF
HD74LV245A
Output-skew Characteristics
• CL = 50 pF
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol
VCC (V)
Min
Max
Min
Max
Unit
Output skew
t sk (O)
2.3 to 2.7
—
2.0
—
2.0
ns
3.0 to 3.6
—
1.5
—
1.5
4.5 to 5.5
—
1.0
—
1.0
Note: Skew between any outputs of the me package switching in the same direction. This parameter is
warranted but not production tested.
Operating Characteristics
• CL = 50 pF
Ta = 25°C
Item
Symbol
VCC (V)
Min
Typ
Max
Unit
Test Conditions
Power dissipation
capacitance
CPD
3.3
—
20.0
—
pF
f = 10 MHz
5.0
—
25.0
—
Noise Characteristics
• CL = 50 pF
Ta = 25°C
Item
Symbol
VCC (V)
Min
Typ
Max
Unit
Quiet output,
maximum
dynamic VOL
VOL (P)
3.3
—
0.5
0.8
V
Quiet output,
minimum
dynamic VOL
VOL (V)
3.3
—
–0.4
–0.8
Quiet output,
minimum
dynamic VOH
VOH (V)
3.3
—
2.9
—
High-level
dynamic
input voltage
VIH (D)
3.3
2.31
—
—
Low level
dynamic
inout voltage
VIL (D)
3.3
—
—
0.99
Test Conditions
V
9
HD74LV245A
Test Circuit
VCC
VCC
Input
Pulse generator
Zout = 50 Ω
See Function Table
OE
Output
A1
S1
1 kΩ
S2
B1
OPEN
GND
CL =
15 or 50 pF
VCC
DIR
Notes : 1. C L includes the probe and jig capacitance.
2. A2–B2 to A8–B8 are idential to above load circuit.
3. S1 : Input–Output change switch.
10
TEST
t PLH /tPHL
S2
OPEN
t ZH/tHZ
t ZL /tLZ
GND
VCC
HD74LV245A
• Waveform – 1
tr
Input
10%
tf
90%
50% VCC
VCC
90%
50% VCC
10%
t PHL
t PLH
0V
VOH
In phase output
50% VCC
50% VCC
VOL
• Wareform – 2
tf
tr
90%
OE
50% VCC
10%
t ZL
VCC
90%
50% VCC
10%
0V
t LZ
VCC
50% VCC
Waveform – A
t ZH
Waveform – B
VOL + 0.3 V
t HZ
50% VCC
VOH – 0.3 V
VOL
VOH
0V
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns
2. Waveform-A is for an output with internal conditions such that the output is low except when disabled
by the output control.
3. Waveform-B is for an output with internal conditions such that the output is high except when disabled
by the output control.
4. The output are measured one at a time with one transition per measurement.
11
HD74LV245A
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
12
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DA
—
Conforms
0.31 g
HD74LV245A
Unit: mm
12.8
13.2 Max
11
1
10
0.20 ± 0.10
0.935 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*0.27 ± 0.05
0.25 ± 0.04
2.65 Max
7.50
20
0.25
10.40 +– 0.40
1.45
0° – 8°
0.57
0.70 +– 0.30
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DB
Conforms
—
0.52 g
13
HD74LV245A
Unit: mm
6.50
6.80 Max
11
1
10
4.40
20
0.65
+0.08
–0.07
*0.22
0.20 ± 0.06
1.0
0.13 M
6.40 ± 0.20
*Dimension including the plating thickness
Base material dimension
14
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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copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
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
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
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written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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