HD74HC125/HD74HC126 [ETC]
;
ETC 
HD74HC125/HD74HC126
Quad. Bus Buffer Gates (with 3-state outputs)
ADE-205-439 (Z)
1st. Edition
Sep. 2000
Description
The HD74HC125, HD74HC126 require the 3-state control input C to be taken high to put the output into
the high impedance condition, whereas the HD74HC125, HD74HC126 requires the control input to be low
to put the output into high impedance.
Features
•
•
•
•
•
High Speed Operation: tpd = 8 ns typ (CL = 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
Function Table
Inputs
C
Output Y
HC125
HC126
A
X
L
HC125
HC126
H
L
L
L
Z
L
Z
L
H
H
H
H
H
X
Z
:
:
Irrelevent
Off (high-impedance) state of a 3-state output.
HD74HC125/HD74HC126
Pin Arrangement
HD74HC125
1C
1A
1
2
3
4
5
6
7
14 VCC
13 4C
12 4A
11 4Y
10 3C
1Y
2C
2A
2Y
9
8
3A
3Y
GND
(Top view)
HD74HC126
1C
1A
1
2
3
4
5
6
7
14 VCC
13 4C
12 4A
11 4Y
10 3C
1Y
2C
2A
2Y
9
8
3A
3Y
GND
(Top view)
2
HD74HC125/HD74HC126
Absolute Maximum Ratings
Item
Symbol
VCC
Rating
Unit
V
Supply voltage range
Input voltage
–0.5 to +7.0
–0.5 to VCC + 0.5
–0.5 to VCC + 0.5
±35
VIN
V
Output voltage
VOUT
IOUT
ICC, IGND
IIK
V
Output current
mA
mA
mA
mA
mW
°C
DC current drain per VCC, GND
DC input diode current
DC output diode current
Power dissipation per package
Storage temperautre
±75
±20
IOK
±20
PT
500
Tstg
–65 to +150
3
HD74HC125/HD74HC126
DC Characteristics
Ta = –40 to
Ta = 25°C
+85°C
Item
Symbol VCC (V) Min Typ Max Min Max Unit Test Conditions
Input voltage
VIH
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
1.5
—
—
—
—
0.5
1.5
3.15
4.2
—
—
V
V
V
3.15 —
—
4.2
—
—
—
—
—
—
—
—
VIL
0.5
1.35
1.8
—
1.35 —
1.8
—
—
—
—
—
—
Output voltage
VOH
1.9 2.0
4.4 4.5
5.9 6.0
4.18 —
5.68 —
1.9
4.4
5.9
4.13
5.63
—
Vin = VIH or VIL IOH = –20 µA
—
—
—
IOH = –6 mA
IOH = –7.8 mA
—
VOL
—
—
—
—
—
—
0.0 0.1
0.0 0.1
0.0 0.1
0.1
0.1
0.1
0.33
0.33
V
Vin = VIH or VIL IOL = 20 µA
—
—
—
—
—
0.26 —
0.26 —
IOL = 6 mA
IOL = 7.8 mA
Off-state output
current
IOZ
Iin
±0.5 —
±5.0 µA
Vin = VIH or VIL,
Vout = VCC or GND
Input current
6.0
6.0
—
—
—
—
±0.1 —
±1.0 µA
Vin = VCC or GND
Quiescent supply ICC
current
4.0
—
40
µA
Vin = VCC or GND, Iout = 0 µA
4
HD74HC125/HD74HC126
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
+85°C
Ta = 25°C
Symbol VCC (V) Min Typ Max Min Max Unit Test Conditions
Item
Propagation delay tPLH
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
100 —
125 ns
time
tPHL
20
17
—
—
25
—
—
9
21
Output enable
time
tZH
tZL
150 —
190 ns
30
26
—
—
38
—
—
33
Output disable
time
tHZ
tLZ
150 —
190 ns
14 30
—
—
—
—
—
—
38
33
—
—
4
26
60
12
10
10
Output rise/fall
time
tTLH
tTHL
75
15
13
10
ns
—
5
Input capacitance Cin
pF
5
HD74HC125/HD74HC126
Package Dimensions
Unit: mm
19.20
20.32 Max
14
1
8
7
1.30
2.39 Max
7.62
+ 0.10
– 0.05
0.25
2.54 ± 0.25
0.48 ± 0.10
0° – 15°
Hitachi Code
DP-14
JEDEC
EIAJ
Mass (reference value)
Conforms
Conforms
0.97 g
Unit: mm
10.06
10.5 Max
8
7
14
1
+ 0.20
7.80
– 0.30
1.42 Max
1.15
0° – 8°
1.27
0.70 ± 0.20
*0.42 ± 0.08
0.40 ± 0.06
0.15
M
0.12
Hitachi Code
JEDEC
FP-14DA
—
EIAJ
Conforms
0.23 g
*Dimension including the plating thickness
Base material dimension
Mass (reference value)
6
HD74HC125/HD74HC126
Unit: mm
8.65
9.05 Max
8
14
1
7
+ 0.10
6.10
– 0.30
0.635 Max
1.08
0° – 8°
+ 0.67
1.27
0.60
– 0.20
*0.40 ± 0.06
0.15
M
0.25
Hitachi Code
JEDEC
EIAJ
FP-14DN
Conforms
Conforms
0.13 g
*Pd plating
Mass (reference value)
Unit: mm
5.00
5.30 Max
14
8
1
7
0.65
1.0
+0.08
*0.22
–0.07
0.13 M
0.20 ± 0.06
6.40 ± 0.20
0.83 Max
0° – 8°
0.50 ± 0.10
0.10
Hitachi Code
JEDEC
TTP-14D
—
EIAJ
—
0.05 g
*Dimension including the plating thickness
Base material dimension
Mass (reference value)
7
HD74HC125/HD74HC126
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.
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Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
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(Taipei Branch Office)
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Copyright Hitachi, Ltd., 2000. All rights reserved. Printed in Japan.
Colophon 2.0
8
相关型号：
HD74HC125P-E
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