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HD74LVC16541
16-bit Buffers / Line Drivers with 3-state Outputs
ADE-205-058B(Z)
Rev.2
September 1995
Description
The HD74LVC16541 has sixteen buffers with three state outputs in a 48 pin package. When G1 and G 2 is
low level, this drivers set up output is enable. Low voltage and high speed operation is suitable at the
battery drive product (note type personal computer) and low power consumption extends the life of a
battery for long time operation.
Features
• VCC = 2.0 V to 5.5 V
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±24 mA (@VCC = 3.0 V to 5.5 V)
Function Table
Inputs
G1 G2 A Output Y
LLLL
LLHH
HXXZ
XHXZ
H : High level
L : Low level
X : Immaterial
Z : High impedance
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HD74LVC16541
Pin Arrangement
1G1
1Y1
1Y2
GND
1Y3
1Y4
V
CC
1Y5
1Y6
GND
1Y7
1Y8
2Y1
2Y2
GND
2Y3
2Y4
V
CC
2Y5
2Y6
GND
2Y7
2Y8
2G1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1G2
1A1
1A2
GND
1A3
1A4
V
CC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V
CC
2A5
2A6
GND
2A7
2A8
2G2
1
2
3
4
5
6
7
8
9
(Top view)
2
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HD74LVC16541
Absolute Maximum Ratings
Item Symbol Ratings Unit Conditions
Supply voltage V
Input diode current I
Input voltage V
Output diode current I
Output voltage V
Output current I
VCC, GND current / pin ICC or I
CC
IK
I
OK
O
O
GND
Storage temperature Tstg –65 to +150 °C
Note: 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
–0.5 to 6.0 V
–50 mA VI = –0.5 V
–0.5 to 6.0 V
–50 mA VO = –0.5 V
50 mA VO = V
+0.5 V
CC
–0.5 to VCC +0.5 V
±50 mA
100 mA
Item Symbol Ratings Unit Conditions
Supply voltage V
CC
1.5 to 5.5 V Data retention
2.0 to 5.5 V At operation
Input / output voltage V
I
V
O
0 to 5.5 V G, A
0 to V
CC
VY
Operating temperature Ta –40 to 85 °C
Output current I
Input rise / fall time
*1
OH
I
OL
tr, t
f
–12 mA VCC = 2.7 V
*2
–24
mA VCC = 3.0 V to 5.5 V
12 mA VCC = 2.7 V
*2
24
mA VCC = 3.0 V to 5.5 V
10 ns/V
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform : Refer to test circuit of switching characteristics.
2. duty cycle ≤ 50%
3
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HD74LVC16541
Electrical Characteristics
Item Symbol V
Input voltage V
Output voltage V
Input current I
Off state output current I
Quiescent supply current I
V
V
∆I
IH
IL
OH
OL
IN
OZ
CC
CC
Ta = –40 to 85°C
(V) Min Max Unit Test Conditions
CC
2.7 to 3.6 2.0 — V
4.5 to 5.5 VCC×0.7 — V
2.7 to 3.6 — 0.8 V
4.5 to 5.5 — VCC×0.3 V
2.7 to 5.5 V
–0.2 — V IOH = –100 µA
CC
2.7 2.2 — V IOH = –12 mA
3.0 2.4 — V
3.0 2.0 — V IOH = –24 mA
4.5 3.8 — V
2.7 to 5.5 — 0.2 V IOL = 100 µA
2.7 — 0.4 V IOL = 12 mA
3.0 — 0.55 V IOL = 24 mA
4.5 — 0.55 V
0 to 5.5 — ±5.0 µAVIN = 5.5 V or GND
5.5 — ±10 µAVIN = VCC, GND
V
OUT = VCC
or GND
5.5 — 40 µAVIN = VCC or GND
3.0 to 3.6 — 500 µAVIN = one input at(VCC–0.6)V,
other inputs at V
or GND
CC
4
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Switching Characteristics
Item Symbol V
Propagation delay time t
Output enable time t
Output disable time t
Input capacitance C
Output capacitance C
Test Circuit
PLH
t
PHL
ZH
t
ZL
HZ
t
LZ
IN
O
HD74LVC16541
Ta = –40 to 85°C
(V) Min Typ Max Unit From (Input) To (Output)
CC
2.7 — 4.5 7.5 ns A Y
3.3±0.3 1.5 3.5 6.5 ns
5.0±0.5 — 2.5 5.0 ns
2.7 — 5.5 9.0 ns G Y
3.3±0.3 1.5 4.0 8.0 ns
5.0±0.5 — 3.0 6.5 ns
2.7 — 4.0 8.5 ns G Y
3.3±0.3 1.5 3.5 7.5 ns
5.0±0.5 — 2.5 6.0 ns
2.7 — 3.0 — pF
2.7 — 15.0 — pF
V
CC
V
CC
G1
Input
Pulse Generator
Z = 50
out
Ω
A1 Y1
See Function Table
G2
Notes: 1. CL includes probe and jig capacitance.
2. A2-Y2 to A8-Y8 are identical to above load circuit.
Output
C =
50 pF
L
500
Ω
50 Scope
Symbol
t / t
PLH PHL
t / t
ZH HZ
t / t
ZL LZ
450
Ω
S1
Ω
Vcc=2.7V,
3.3±0.3V
OPEN
GND
6 V
OPEN
*1
See under table
GND
S1
Vcc=5.0±0.5V
OPEN
GND
2×Vcc
5
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HD74LVC16541
Waveforms – 1
Input A
10 %
Output Y
Notes: 1. tr = 2.5 ns, tf = 2.5 ns
2. nput waveform : PRR = 10 MHz, duty cycle 50%
Waveforms – 2
t
f
Input G
Waveform - A
Waveform - B
90 %
10 %
V
ref
t
r
90 %
V
ref
t
PLH
V
ref
t
ZL
V
ref
t
ZH
V
ref
90 %
t
r
V
90 %
V
ref
10 %
ref
t
f
V
IH
10 %
t
PHL
V
ref
GND
V
OH
V
OL
V
IH
GND
t
LZ
≈V
OH1
V + 0.3 V
OL
t
HZ
V – 0.3 V
OH
V
V
≈V
OL
OH
OL1
Notes: 1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveform : PRR = 10 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.
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TEST
V
IH
V
ref
V
OH1
V
OL1
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
2.7 V Vcc
1.5 V
50%Vcc
3 V
GND
Vcc
GND
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12.5
12.7 Max
Unit: mm
2548
6.10
*0.21
0.19
124
+0.04
–0.05
+0.03
–0.05
0.50
0.08
M
0.65 Max
0.10
1.20 Max
*Dimension including the plating thickness
Base material dimension
0.15 ± 0.04
*0.17 ± 0.05
8.10 ± 0.20
0.13 ± 0.05
Hitachi Code
JEDEC
EIAJ
Weight
0° – 8°
0.50 ± 0.1
(reference value)
1.0
TTP-48DB
—
—
0.20 g
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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
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5. This product is not designed to be radiation resistant.
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