HD74LV245AT [ETC]
BUS TRANSCEIVER|SINGLE|8-BIT|LV-CMOS|TSSOP|20PIN|PLASTIC ; 总线收发器|单| 8位| LV- CMOS | TSSOP封装| 20PIN |塑料\n型号: | HD74LV245AT |
厂家: | ETC |
描述: | BUS TRANSCEIVER|SINGLE|8-BIT|LV-CMOS|TSSOP|20PIN|PLASTIC
|
文件: | 总15页 (文件大小:70K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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. Low-
voltage 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
L
DIR
L
Operation
B data to A bus
A data to B bus
Isolation
L
H
H
X
Note: H: High level
L: Low level
X: Immaterial
HD74LV245A
Pin Arrangement
1
2
3
4
5
6
7
8
9
20 VCC
DIR
A1
A2
A3
A4
A5
A6
A7
A8
19
18
17
16
15
14
13
12
11
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND 10
(Top view)
2
HD74LV245A
Absolute Maximum Ratings
Item
Symbol
Ratings
–0.5 to 7.0
–0.5 to 7.0
–0.5 to VCC + 0.5
–0.5 to 7.0
–20
Unit
V
Conditions
Supply voltage range
Input voltage range*1
Output voltage range*1, *2
VCC
VI
V
VO
V
Output: H or L
VCC: OFF or Output: Z
VI < 0
Input clamp current
IIK
mA
mA
mA
mA
Output clamp current
IOK
±50
VO < 0 or VO > VCC
VO = 0 to VCC
Continuous output current
IO
±35
Continuous current through
ICC or IGND
±70
V
CC or GND
Maximum power dissipation
PT
835
mW
SOP
at Ta = 25°C (in still air)*3
757
TSSOP
Storage temperature
Tstg
–65 to 150
°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 ∆VBE method mounting on glass epoxy board (40 × 40 × 1.6
mm) with 10% of wiring density.
3
HD74LV245A
Recommended Operating Conditions
Item
Symbol
VCC
Min
2.0
0
Max
5.5
5.5
VCC
5.5
–50
–2
Unit
V
Conditions
Supply voltage range
Input voltage range
Output voltage range
VI
V
VO
0
V
Output: H or L
0
High impedance state
VCC = 2.0 V
Output current
IOH
—
—
—
—
—
—
—
—
0
µA
mA
VCC = 2.3 to 2.7 V
VCC = 3.0 to 3.6 V
VCC = 4.5 to 5.5 V
VCC = 2.0 V
–8
–16
50
IOL
µA
2
mA
VCC = 2.3 to 2.7 V
VCC = 3.0 to 3.6 V
VCC = 4.5 to 5.5 V
VCC = 2.3 to 2.7 V
VCC = 3.0 to 3.6 V
VCC = 4.5 to 5.5 V
8
16
Input transition rise or fall rate
∆t /∆v
200
100
20
ns/V
0
0
Operating free-air temperature Ta
–40
85
°C
Note: Unused or floating inputs must be held high or low.
4
HD74LV245A
Logic Diagram
1
2
DIR
A1
19
18
OE
B1
Other seven channels
5
HD74LV245A
DC Electrical Characteristics
•
Ta = –40 to 85°C
Item
Symbol
VCC (V)*1
2.0
Min
Typ
—
—
—
—
—
—
—
—
—
Max
—
Unit
Test Conditions
Input voltage
VIH
1.5
V
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
2.0
V
V
V
CC × 0.7
—
CC × 0.7
CC × 0.7
—
—
VIL
—
0.5
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
—
V
V
V
CC × 0.3
—
CC × 0.3
CC × 0.3
—
Output voltage
VOH
Min to
Max
VCC –0.1
—
V
IOH = –50 µA
2.3
3.0
4.5
2.0
2.48
3.8
—
—
—
—
—
—
—
—
0.1
IOH = –2 mA
IOH = –8 mA
IOH = –16 mA
IOL = 50 µA
VOL
Min to
Max
2.3
—
—
—
—
—
—
—
—
—
—
0.4
0.44
0.55
±1
IOL = 2 mA
3.0
IOL = 8 mA
4.5
IOL = 16 mA
Input current
IIN
0 to 5.5
5.5
µA
µA
VIN = 5.5 V or GND
VO = VCC or GND
Off-state
IOZ*2
±5
output current
Quiescent
ICC
5.5
0
—
—
—
—
—
20
5
µA
µA
pF
pF
VIN = VCC or GND, IO = 0
VO = 5.5 V
supply current
Output leakage IOFF
current
—
Input
CIN
3.3
3.3
3.0
5.5
—
—
VI = VCC or GND
VO = VCC or GND
capacitance
Output
CO
capacitance
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
2. For I/O ports, the parameter IOZ includes the input leakage current.
6
HD74LV245A
Switching Characteristics
•
VCC = 2.5 ± 0.2 V
Ta = 25°C
Ta = –40 to 85°C
FROM
(Input)
TO
Item
Symbol Min Typ
Max Min
13.0 1.0
Max
Unit Test Conditions
(Output)
Propagation
delay time
tPLH
tPHL
—
8.3
15.0
ns
CL = 15 pF
A or B
B or A
—
—
11.2 15.9 1.0
11.8 19.9 1.0
18.0
22.0
CL = 50 pF
CL = 15 pF
Enable time
tZH
tZL
ns
OE
A or B
—
—
14.1 22.7 1.0
11.8 18.1 1.0
26.0
20.0
CL = 50 pF
CL = 15 pF
Disable
time
tHZ
tLZ
ns
OE
A or B
—
17.6 23.1 1.0
25.0
CL = 50 pF
•
VCC = 3.3 ± 0.3 V
Ta = 25°C
Ta = –40 to 85°C
FROM
(Input)
TO
Item
Symbol Min Typ
Max Min
8.4 1.0
Max
Unit Test Conditions
(Output)
Propagation
delay time
tPLH
tPHL
—
5.9
10.0
ns
CL = 15 pF
A or B
B or A
—
—
7.9
8.2
11.9 1.0
13.2 1.0
13.5
15.5
CL = 50 pF
CL = 15 pF
Enable time
tZH
tZL
ns
OE
A or B
—
—
9.9
9.6
16.7 1.0
16.5 1.0
19.0
19.5
CL = 50 pF
CL = 15 pF
Disable
time
tHZ
tLZ
ns
OE
A or B
—
13.9 19.8 1.0
22.0
CL = 50 pF
7
HD74LV245A
Switching Characteristics (cont)
•
VCC = 5.0 ± 0.5 V
Ta = 25°C
Ta = –40 to 85°C
FROM
(Input)
TO
Item
Symbol Min Typ
Max Min
Max
Unit Test Conditions
(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
5.7
7.5
8.5
1.0
1.0
8.5
CL = 50 pF
CL = 15 pF
Enable time
tZH
tZL
10.0
ns
OE
A or B
—
—
7.0
7.8
10.6 1.0
12.8 1.0
12.0
14.2
CL = 50 pF
CL = 15 pF
Disable
time
tHZ
tLZ
ns
OE
A or B
—
10.9 14.7 1.0
16.0
CL = 50 pF
8
HD74LV245A
Output-skew Characteristics
•
CL = 50 pF
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol VCC (V)
tsk (O) 2.3 to 2.7
Min
—
Max
2.0
1.5
1.0
Min
—
Max
Unit
Output skew
2.0
1.5
1.0
ns
3.0 to 3.6
4.5 to 5.5
—
—
—
—
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
Min
Item
Symbol VCC (V)
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
V
Test Conditions
Quiet output, VOL (P)
maximum
dynamic VOL
3.3
3.3
3.3
3.3
3.3
—
0.5
–0.4
2.9
—
0.8
–0.8
—
Quiet output, VOL (V)
minimum
dynamic VOL
—
Quiet output, VOH (V)
minimum
dynamic VOH
—
High-level
dynamic
input voltage
VIH (D)
2.31
—
—
V
Low level
dynamic
VIL (D)
—
0.99
inout voltage
9
HD74LV245A
Test Circuit
VCC
VCC
OE
Input
Output
S1
Pulse generator
Zout
A1
B1
= 50 Ω
1 kΩ
OPEN
GND
VCC
S2
CL=
15 or 50 pF
DIR
TEST
S2
tPLH/tPHL
tZH/tHZ
tZL /tLZ
OPEN
GND
VCC
Notes : 1. CL 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
HD74LV245A
• Waveform – 1
Input
tr
tf
VCC
0 V
90%
50% VCC
90%
50% VCC
10%
10%
tPHL
tPLH
VOH
In phase output
50% VCC
50% VCC
VOL
• Wareform – 2
tf
tr
VCC
0 V
90%
90%
50% VCC
10%
50% VCC
OE
10%
tZL
tLZ
VCC
VOL
VOH
0 V
50% VCC
Waveform – A
Waveform – B
VOL + 0.3 V
VOH– 0.3 V
tZH
tHZ
50% VCC
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
10
20
1
+ 0.20
7.80
– 0.30
0.80 Max
1.15
0° – 8°
1.27
0.70 ± 0.20
*0.42 ± 0.08
0.40 ± 0.06
0.15
0.12 M
Hitachi Code
JEDEC
FP-20DA
—
EIAJ
Conforms
*Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.31 g
12
HD74LV245A
Unit: mm
12.8
13.2 Max
11
10
20
1
+ 0.25
– 0.40
10.40
0.935 Max
1.45
0° – 8°
+ 0.57
– 0.30
1.27
0.70
*0.42 ± 0.08
0.40 ± 0.06
0.15
M
0.12
Hitachi Code
JEDEC
EIAJ
FP-20DB
Conforms
—
*Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.52 g
13
HD74LV245A
Unit: mm
6.50
6.80 Max
20
11
1
10
0.65
1.0
+0.08
–0.07
*0.22
0.13
M
0.20 ± 0.06
6.40 ± 0.20
0.65 Max
0° – 8°
0.50 ± 0.10
0.10
Hitachi Code
TTP-20DA
JEDEC
EIAJ
—
—
*Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.07 g
14
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 fail-
safes, 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.
Hitachi, Ltd.
Semiconductor & Integrated Circuits.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
URL
NorthAmerica
Europe
: http:semiconductor.hitachi.com/
: http://www.hitachi-eu.com/hel/ecg
Asia (Singapore)
Asia (Taiwan)
: http://www.has.hitachi.com.sg/grp3/sicd/index.htm
: http://www.hitachi.com.tw/E/Product/SICD_Frame.htm
Asia (HongKong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm
Japan
: http://www.hitachi.co.jp/Sicd/indx.htm
For further information write to:
Hitachi Semiconductor
(America) Inc.
Hitachi Europe GmbH
Hitachi Asia (Hong Kong) Ltd.
Group III (Electronic Components)
7/F., North Tower, World Finance Centre,
Harbour City, Canton Road, Tsim Sha Tsui,
Kowloon, Hong Kong
Tel: <852> (2) 735 9218
Fax: <852> (2) 730 0281
Hitachi Asia Pte. Ltd.
16 Collyer Quay #20-00
Hitachi Tower
Singapore 049318
Tel: 535-2100
Electronic components Group
Dornacher Stra§e 3
D-85622 Feldkirchen, Munich
Germany
Tel: <49> (89) 9 9180-0
Fax: <49> (89) 9 29 30 00
179 East Tasman Drive,
San Jose,CA 95134
Tel: <1> (408) 433-1990
Fax: <1>(408) 433-0223
Fax: 535-1533
Hitachi Asia Ltd.
Taipei Branch Office
3F, Hung Kuo Building. No.167,
Tun-Hwa North Road, Taipei (105)
Tel: <886> (2) 2718-3666
Fax: <886> (2) 2718-8180
Telex: 40815 HITEC HX
Hitachi Europe Ltd.
Electronic Components Group.
Whitebrook Park
Lower Cookham Road
Maidenhead
Berkshire SL6 8YA, United Kingdom
Tel: <44> (1628) 585000
Fax: <44> (1628) 778322
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
相关型号:
HD74LV245T
Bus Transceiver, LV/LV-A/LVX/H Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, TSSOP-20
HITACHI
HD74LV273AFP-E
LV/LV-A/LVX/H SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20, FP-20DAV
RENESAS
HD74LV273AFPEL-E
LV/LV-A/LVX/H SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20, SOP-20
RENESAS
©2020 ICPDF网 联系我们和版权申明