ETC HD151245

HD151245
Octal Bus Transceivers With 3 State Outputs
ADE-205-597 (Z)
1st. Edition
Dec. 2000
Description
The HD151245 featurs high speed operation and high drivability equivalent to the HD74LS245, which
realize ultra low power dissipation. This device consists of eight bus transceivers with three state outputs
in a 20 pin package. The device transmit data from the A bus to the B bus when the direction control (DIR)
input is at the high level,and from the B bus to the A bus when the DIR input is at the low level, the enable
input (G) can be used to disable the device so that the buses are effectively isolated. The power up/down
protection provides the outputs in high impedance state when Vcc is low regardless of enable input.
Features
• High speed:
• High output current:
•
•
•
•
tpd = 10 ns typ.
IOH = –15 mA
IOL = 24 mA
TTL Compatible Input/Output
Wide operating temperature range: Ta = –40 to +85°C
High impedance state for both
Input/Output in power off condition.
Power Up/Down Protection
HD151245
Pin Arrangement
20 VCC
DIR 1
A1 2
19 G
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)
Function Table
Inputs
G
DIR
Operation
L
L
B data to A bus
L
H
A data to B bus
H
X
Z
H
L
X
Z
2
:
:
:
:
High level
Low level
Irrelevant
High impedance
HD151245
Absolute Maximum Ratings (Ta = 25°C)
Item
Symbol
Rating
Unit
Supply Voltage
VCC
–0.5 to +7.0
V
Input Voltage(G, DiR)
VIN
–0.5 to +7.0
V
Input Voltage(A, B)
VIN
–0.5 to +5.5
V
Output Voltage
VOUT
–0.5 to +5.5
V
Power Dissipation
PT
500
mW
Storage Temperature Range
Tstg
–65 to +150
°C
Note:
1. 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
Min
Typ
Max
Unit
Supply Voltage
VCC
4.5
5.0
5.5
V
Output Current
I OH
—
—
–15
mA
I OL
—
—
24
mA
Topr
–40
25
85
°C
t r, t f
0
—
250
ns/V
Operating Temperature
1
Input Rise and Fall Time*
Note:
1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
3
HD151245
DC Electrical Characteristics (Ta = –40°C to +85°C)
Item
Symbol
Input Voltage
Output Voltage
Min
Max
Unit
VIH
2.0
—
V
VIL
—
0.8
4.5
2.4
—
4.5
2.0
—
4.5
—
0.4
4.5
—
0.5
I OZ
5.5
—
±5.0
I OZ(off)
0
—
±5.0
I IN
5.5
—
±1.0
VOH
VOL
Off State Output Current
Input Current
VCC
V
V
I OL = 12 mA, VIN = VCC – 2.1 V or 0.5 V
I OL = 24 mA, VIN = VCC – 2.1 V or 0.5 V
µA
VOUT = VCC or GND
VOUT = 5.5 V
µA
I IN(off)
0
—
±1.0
Output Short current*
I OS
5.5
–40
–225 mA
Power Supply Current
I CC
5.5
—
0.5
5.5
—
1.5
I CCT*
I OH = –3 mA, VIN = VCC – 2.1 V or 0.5 V
I OH = –15 mA, VIN = VCC – 2.1 V or 0.5 V
1
2
Conditions
VIN = VCC or GND
VIN = 5.5 V
mA
I OUT = 0 µA, VIN = VCC or 0.5 V
VIN = VCC – 2.1 V or 0.5 V
Notes: 1. Not more than one output should be shorted at a time and duration of the short circuit should not
exceed one second.
2. The values show the increase of Icc perpin when TTL level input is applied.
Switching Characteristics (CL = 50 pF)
Ta = 25°C
VCC = 5 V
Item
Min
Max
Min
Max
Unit
Conditions
Propagation Delay Time t PLH
3.0
15.0
3.0
18.0
ns
See Next Page
t PHL
3.0
15.0
3.0
18.0
t TLH
0.0
10.0
0.0
10.0
ns
See Next Page
t THL
0.0
10.0
0.0
10.0
t ZH
3.0
25.0
3.0
30.0
ns
See Next Page
t ZL
3.0
25.0
3.0
30.0
t HZ
3.0
25.0
3.0
30.0
ns
See Next Page
t LZ
3.0
25.0
3.0
30.0
Input Capacitance
CIN
—
5 (Typ)
—
—
pF
VIN = VCC or GND
Input/Output
Capacitance
CI/O
—
12 (Typ)
—
—
pF
VO = VCC or GND
Transion Time
Output Enable Time
Output Disable Time
4
Symbol
Ta = –40°C to 85°C
VCC = 5 V ± 10%
HD151245
Switching Time Test Method
Test Circuit
VCC
VCC
Input
Pulse Generator
Zout = 50 Ω
See Function Table
G
RL =
1k Ω
A1
Output
S1
B1
CL =
50 pF
S2
RL =
1k Ω
DiR
Notes:
1.
2.
3.
CL includes probe and jig capacitance.
Pairs A2-B2 through A8-B8 have load circuits similar at the above
S1 is an input-output cutover switch
Waveform-1
tf
tr
90%
Input
10%
3.0 V
90%
1.3 V
1.3 V
10%
0V
t PHL
t PLH
S1 : OPEN
90%
Output
S1 : OPEN
1.3 V
10%
t TLH
90%
1.3 V
10%
VOH
VOL
t THL
5
HD151245
Waveform-2
tf
G
tr
90%
1.3 V
10%
10%
t ZL
Waveform – A
3.0 V
90%
1.3 V
0V
t LZ
S1 : VCC
S1 : VCC
1.3 V
t ZH
Waveform – B
S1 : GND
10%
t HZ
VOL
90%
VOH
1.3 V
S1 : GND
Notes:
1.
2.
3.
4.
6
VCC
0V
t r = 6.0 ns, tf = 6.0 ns
Input Waveform: PRR = 1 MHz, duty cycle 50%
Inputs for waveform A should be set to apply outputs at low level when enabled by output
control.
Inputs for waveform B should be set to apply outputs at high level when enabled by output
control.
HD151245
Package Dimensions
Unit: mm
24.50
25.40 Max
1
7.00 Max
11
6.30
20
10
1.30
2.54 ± 0.25
0.48 ± 0.10
0.51 Min
1.27 Max
7.62
2.54 Min 5.08 Max
0.89
+ 0.11
0.25 – 0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
DP-20N
—
Conforms
1.26 g
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
Mass (reference value)
FP-20DA
—
Conforms
0.31 g
7
HD151245
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
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.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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Copyright  Hitachi, Ltd., 2000. All rights reserved. Printed in Japan.
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