ETC HD74BC640ARP

HD74BC640A
Octal Bus Transceivers With 3 State Outputs
ADE-205-026 (Z)
1st. Edition
Feb. 1994
Description
The HD74BC640A provides high drivability and operation equal to or better than high speed bipolar
standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5
of high speed bipolar logic IC. When the frequency is 10 MHz. The device has eight bus transceivers with
three state outputs in a 20 pin package. Each device has an active low enable input (G) and a direction
control input, DiR. When DiR is high, data flows from the A inputs to the B outputs. When DiR is high,
data flows from the B inputs to the A outputs. When enable inputs (G) is high, disables both A and B ports
by placing then in a high impedance.
Features
•
•
•
•
Input/Output are at high impedance state when power supply is off.
Input pins can be open, when not used, owing to built in input pull up circuit.
Input is TTL level.
Wide operating temperature range
Ta = –40 to +85°C.
Function Table
Control Inputs
G
DIR
Operation
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
H :
L :
X :
High level
Low level
Immaterial
HD74BC640A
Pin Arrangement
DiR
1
20
VCC
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)
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage
VCC
–0.5 to +7.0
V
Input diode current
I IK
±30
mA
Input voltage
VIN
–0.5 to +7.5
V
Output voltage
VOUT
–0.5 to +7.5
V
Off state output voltage
VOUT(off)
–0.5 to +5.5
V
Storage temperature
Tstg
–65 to +150
°C
Note:
2
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.
HD74BC640A
Recommended Operating Conditions
Item
Symbol
Min
Typ
Max
Unit
Supply voltage
VCC
4.5
5.0
5.5
V
Input voltage
VIN
0
—
VCC
V
Ouput voltage
VOUT
0
—
VCC
V
Topr
–40
—
85
°C
t r, t f
0
—
8
ns/V
Operating temperature
1
Input rise/fall time*
Note:
1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Logic Diagram
DiR
A1
G
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
3
HD74BC640A
Electrical Characteristics (Ta = –40 to +85°C)
Item
Symbol
Input voltage
Output voltage
Min
Max
Unit
VIH
2.0
—
V
VIL
—
0.8
V
4.5
2.4
—
V
I OH = –3 mA
4.5
2.0
—
V
I OH = –15 mA
4.5
—
0.5
V
I OL = 48 mA
4.5
—
0.55
V
I OL = 64 mA
VOH
VOL
VCC (V)
Test Conditions
Input diode voltage
VIK
4.5
—
–1.2
V
I IN = –18 mA
Input current
II
5.5
—
–250
µA
VIN = 0 V
5.5
—
100
µA
An or Bn, VIN = 5.5 V
5.5
—
1.0
µA
DiR or G, VIN = 5.5 V
5.5
—
100
µA
DiR or G, VIN = 7 V
I OS
5.5
–100
–225
mA
VO = 0 V, VIN = 0 or 5.5 V
I OZH
5.5
—
–100
µA
VO = 2.7 V
I OZL
5.5
—
–250
µA
VO = 0.5 V
I CCL
5.5
—
29.5
mA
VIN = 0 or 5.5 V
All outputs is “L”
I CCH
5.5
—
2.5
mA
VIN = 0 or 5.5 V
All outputs is “H”
I CCZ
5.5
—
4.5
mA
VIN = 0 or 5.5 V
All outputs is “Z”
I CCT*2
5.5
—
1.5
mA
VIN = 3.4 or 0.5 V
Output short circuit current*
Off state output current
Supply current
1
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. When input by the TTL level, it shows I CC increase at per one input pin.
4
HD74BC640A
Switching Characteristics (CL = 50 pF)
Ta = 25°C
VCC = 5.0 V
Ta = –40 to +85°C
VCC = 5.0 V ±10%
Item
Symbol
Min
Max
Min
Max
Unit
Test Conditions
Propagation delay time
t PLH
3.0
6.0
3.0
7.0
ns
An to Bn
t PHL
3.0
6.0
3.0
7.0
t PLH
3.0
6.0
3.0
7.0
ns
Bn to An
t PHL
3.0
6.0
3.0
7.0
t ZH
3.0
9.0
3.0
11.0
ns
G to Bn
t ZL
3.0
9.0
3.0
11.0
t ZH
3.0
9.0
3.0
11.0
ns
G to An
t ZL
3.0
9.0
3.0
11.0
t HZ
3.0
8.0
3.0
10.0
ns
G to Bn
t LZ
3.0
8.0
3.0
10.0
t HZ
3.0
8.0
3.0
10.0
ns
G to An
t LZ
3.0
8.0
3.0
10.0
Input capacitance
CIN
3.0 (Typ)
—
pF
VIN = VCC or GND
Output capacitance
CI/O
15.0 (Typ)
—
pF
VI/O = VCC or GND
Output enable time
Output disable time
5
HD74BC640A
Test Circuit
VCC
VCC
Input
Pulse
Generator
Zout = 50 Ω
See Function Table
G
Output
A1
S1
500 Ω
B1
CL =
50 pF
450 Ω
OPEN
7V
*4
50 Ω
Scope
DIR
Notes:
1.
2.
3.
4.
CL includes probe and jig capacitance.
A2-B2 to A8-B8 are identical to above load circuit.
S1: Input-Output change switch.
Open: tPLH, t PHL , t ZH tHZ
7 V: t ZL, t LZ
Waveforms-1
tf
Input
tr
90 %
1.5 V
10 %
90 %
1.5 V
10 %
t PHL
t PLH
3V
0V
VOH
Output
1.5 V
1.5 V
VOL
6
HD74BC640A
Waveforms-2
tf
G
tr
90 %
1.5 V
10 %
3V
90 %
1.5 V
10 %
t LZ
t ZL
0V
3.5 V
Waveform – A
1.5 V
VOL + 0.3 V
t ZH
Waveform – B
t HZ
1.5 V
VOH – 0.3 V
VOL
VOH
0V
Notes: 1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveforms: PRR = 1 MHz, duty cycle 50%
3. Waveform-A shows input conditions such that the output is “L” level when enable by the output
control.
4. Waveform-B shows input conditions such that the output is “H” level when enable by the output
control.
7
HD74BC640A
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
8
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
FP-20DA
—
Conforms
0.31 g
HD74BC640A
Unit: mm
12.8
13.2 Max
11
1
10
0.20 ± 0.10
0.935 Max
*0.27 ± 0.05
0.25 ± 0.04
2.65 Max
7.50
20
1.27
*0.42 ± 0.08
0.40 ± 0.06
0.25
10.40 +– 0.40
1.45
0° – 8°
0.57
0.70 +– 0.30
0.15
0.12 M
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
*Dimension including the plating thickness
Base material dimension
FP-20DB
Conforms
—
0.52 g
Unit: mm
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
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
Mass (reference value)
TTP-20DA
—
—
0.07 g
9
HD74BC640A
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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10