Page 1
HD74LV125A
Quad. Bus Buffer Gates with 3-state Outputs
ADE-205-245 (Z)
1st Edition
March 1999
Description
The HD74LV125A features independent line drivers with three state outputs. Each output is disabled when
the associated output enable (OE) input is high. To ensure the high impedance state during power up or
power down, OE should be connected to VCC through a pull-down resistor; the minimum value of the
resistor is determined by the current souring capability of the driver. Low-voltage and high-speed operation
is suitable for the 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 A Output Y
LHH
LLL
HXZ
Note: H: High level
L: Low level
X: Immaterial
Z: High impedance
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HD74LV125A
Pin Arrangement
1OE
V
1
14
CC
1A
1Y
2OE
2A
2Y
GND
2
3
4
5
6
7
(Top view)
13
12
11
10
4OE
4A
4Y
3OE
9
3A
8
3Y
2
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HD74LV125A
Absolute Maximum Ratings
Item Symbol Ratings Unit Conditions
Supply voltage range V
Input voltage range*
Output voltage range*
1
1, 2
Input clamp current I
Output clamp current I
Continuous output current I
Continuous current through
V
or GND
CC
Maximum power dissipation
at Ta = 25°C (in still air)*
3
CC
V
I
V
O
IK
OK
O
or I
I
CC
GND
P
T
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 if the input and output clamp-current
ratings are observed.
2. This value is limited to 5.5 V maximum.
3. The maximum package power dissipation was calculated using a junction temperature of 150°C.
–0.5 to 7.0 V
–0.5 to 7.0 V
–0.5 to VCC + 0.5 V Output: H or L
–0.5 to 7.0 VCC: OFF or Output: Z
–20 mA VI < 0
±50 mA VO < 0 or VO > V
±35 mA VO = 0 to V
CC
CC
±70 mA
785 mW SOP
500 TSSOP
3
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HD74LV125A
Recommended Operating Conditions
Item Symbol Min Max Unit Conditions
Supply voltage range V
Input voltage range V
Output voltage range V
Output current I
CC
I
O
OH
I
OL
Input transition rise or fall rate ∆t /∆v 0 200 ns/V VCC = 2.3 to 2.7 V
Operating free-air temperature Ta –40 85 °C
Note: Unused or floating inputs must be held high or low.
2.0 5.5 V
0 5.5 V
0VCCV H or L
0 5.5 High impedance state
— –50 µAV
—–2 mAV
—–8 V
= 2.0 V
CC
= 2.3 to 2.7 V
CC
= 3.0 to 3.6 V
CC
— –16 VCC = 4.5 to 5.5 V
—50 µAV
= 2.0 V
CC
— 2 mA VCC = 2.3 to 2.7 V
—8 V
—16 V
= 3.0 to 3.6 V
CC
= 4.5 to 5.5 V
CC
0 100 VCC = 3.0 to 3.6 V
020 V
= 4.5 to 5.5 V
CC
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Page 5
Logic Diagram
1OE
1A
2OE
2A
3OE
3A
4OE
HD74LV125A
1
2
4
5
10
9
13
12
3
1Y
6
2Y
8
3Y
11
4Y4A
5
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HD74LV125A
DC Electrical Characteristics
• Ta = –40 to 85°C
Item Symbol VCC (V)* Min Typ Max Unit Test Conditions
Input voltage V
Output voltage V
Input current I
Off-state
IH
V
IL
OH
V
OL
IN
I
OZ
output current
Quiescent
I
CC
supply current
Output leakage
I
OFF
current
Input
C
IN
capacitance
Note: For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
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
VCC – 0.1 — — V IOH = –50 µA
Max
2.3 2.0 — — IOH = –2 mA
3.0 2.48 — — IOH = –8 mA
4.5 3.8 — — IOH = –16 mA
Min to
— — 0.1 IOL = 50 µA
Max
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 µAVI = 5.5 V or GND
5.5 — — ±5 µAVO = VCC or GND
5.5 — — 20 µAVI = VCC or GND, IO = 0
0——5 µAVI or VO = 0 V to 5.5 V
3.3 — 3.0 — pF VI = VCC or GND
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Page 7
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
Propagation
delay time
Enable time t
Disable
time
• VCC = 3.3 ± 0.3 V
Item Symbol Min Typ Max Min Max Unit Test Conditions
Propagation
delay time
Enable time t
t
PLH
t
PHL
— 6.8 13.0 1.0 15.5 ns CL = 15 pF A Y
— 8.7 16.5 1.0 18.5 CL = 50 pF
ZH
t
ZL
— 7.0 13.0 1.0 15.5 ns CL = 15 pF OE Y
— 8.8 16.5 1.0 18.5 CL = 50 pF
t
HZ
t
LZ
— 5.1 14.7 1.0 17.0 ns CL = 15 pF OE Y
— 7.3 18.2 1.0 20.5 CL = 50 pF
Ta = 25°C Ta = –40 to 85°C
t
PLH
t
PHL
— 4.8 8.0 1.0 9.5 ns CL = 15 pF A Y
— 6.1 11.5 1.0 13.0 CL = 50 pF
ZH
t
ZL
— 4.8 8.0 1.0 9.5 ns CL = 15 pF OE Y
HD74LV125A
FROM
(Input)TO(Output)
FROM
(Input)TO(Output)
Disable
time
— 6.2 11.5 1.0 13.0 CL = 50 pF
t
HZ
t
LZ
— 4.1 9.7 1.0 11.5 ns CL = 15 pF OE Y
— 5.5 13.2 1.0 15.0 CL = 50 pF
7
Page 8
HD74LV125A
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
Propagation
delay time
Enable time t
Disable
time
t
PLH
t
PHL
— 3.4 5.5 1.0 6.5 ns CL = 15 pF A Y
— 4.3 7.5 1.0 8.5 CL = 50 pF
ZH
t
ZL
— 3.4 5.1 1.0 6.0 ns CL = 15 pF OE Y
— 4.4 7.1 1.0 8.0 CL = 50 pF
t
HZ
t
LZ
— 3.2 6.8 1.0 8.0 ns CL = 15 pF OE Y
— 4.0 8.8 1.0 10.0 CL = 50 pF
FROM
(Input)TO(Output)
8
Page 9
HD74LV125A
Output-skew Characteristics
Ta = 25°C Ta = –40 to 85°C
Item Symbol V
Output skew t
sk (O)
Note: Skew between any outputs of the same package switching in the same direction. This parameter is
warranted but not production tested.
Operating Characteristics
• CL = 50 pF
Item Symbol V
Power
dissipation
capacitance
C
PD
= (V) Min Max Min Max Unit
CC
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
Ta = 25°C
= (V) Min Typ Max Unit Test Conditions
CC
3.3 — 23.2 — pF f = 10 MHz
5.0 — 27.3 —
Noise Characteristics
• CL = 50 pF
Item Symbol V
Quiet output,
maximum
dynamic V
Quiet output,
minimum
dynamic V
Quiet output,
minimum
dynamic V
High-level
dynamic
input voltage
Low-level
dynamic
input voltage
V
OL (P)
OL
V
OL (V)
OL
V
OH (V)
OH
V
IH (D)
V
IL (D)
Ta = 25°C
= (V) Min Typ Max Unit Test Conditions
CC
3.3 — 0.3 0.8 V
3.3 — –0.3 –0.8
3.3 — 3.0 —
3.3 2.31 — — V
3.3 — — 0.99
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Page 10
HD74LV125A
Test Circuit
Pulse Generator
Z = 50
OUT
Ω
V
CC
Input
See Function Table
Note: 1. C includes probe and jig capacitance.
L
V
CC
Output
C =
L
15 or 50 pF
1 kΩ
t /t
PLH PHL
S1
TEST
t /t
ZH HZ
t /t
ZL LZ
OPEN
*1 See under table
GND
S1
OPEN
GND
V
CC
10
Page 11
•
Waveform-1
Input A
Output Y
•
Waveform-2
Input OE
Waveform - A
Waveform - B
10 %
90 %
50 %V
tr
90 %
50 %V
CC
t
PLH
CC
10 % 10 %
t
ZL
50 %V
t
ZH
50 %V
CC
CC
90 %
50 %V
50 %V
CC
CC
tf
trtf
50 %V
10 %
90 %
t
t
HZ
LZ
t
PHL
50 %V
CC
CC
V + 0.3 V
OL
V – 0.3 V
OH
HD74LV125A
V
CC
GND
V
OH
V
OL
V
CC
GND
V
CC
V
OL
V
OH
GND
Notes: 1.
2.
tr ≤ 3 ns, tf ≤ 3 ns
Input waveform: PRR ≤ 1
MHz, duty cycle 50%
3. Waveform-A is for an output with internal conditions such that the output is low except when
disabled by the output control.
4. Waveform-B is for an output with internal conditions such that the output is high except when
disabled by the output control.
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HD74LV125A
Package Dimensions
14
1
1.27
10.06
10.5 Max
1.42 Max
Unit: mm
8
5.5
7
+ 0.20
7.80
– 0.30
2.20 Max
0.22 ± 0.05
1.15
0.20 ± 0.04
0° – 8°
0.70 ± 0.20
0.42 ± 0.08
0.40 ± 0.06
Dimension including the plating thickness
Base material dimension
0.12
0.10 ± 0.10
0.15
M
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
FP-14DA
—
Conforms
0.23 g
12
Page 13
14
HD74LV125A
Unit: mm
8.65
9.05 Max
8
1
0.635 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
7
+ 0.11
0.14
0.25
3.95
– 0.04
0.15
1.75 Max
M
6.10
1.08
0.20 ± 0.03
*0.22 ± 0.03
+ 0.67
0.60
– 0.20
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
+ 0.10
– 0.30
0° – 8°
FP-14DN
Conforms
Conforms
0.13 g
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Page 14
HD74LV125A
0.22
0.20 ± 0.06
5.00
5.30 Max
14 8
4.40
17
0.65
+0.08
–0.07
0.13
M
0.83 Max
Unit: mm
1.0
6.40 ± 0.20
0.10
1.10 Max
Dimension including the plating thickness
Base material dimension
0.17 ± 0.05
0.15 ± 0.04
+0.03
–0.04
0.07
0° – 8°
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
0.50 ± 0.10
TTP-14D
—
—
0.05 g
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Page 15
Cautions
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intellectual property rights, in connection with use of the information contained in this document.
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received the latest product standards or specifications before final design, purchase or use.
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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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Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
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