74LCX125YTTR - STMicroelectronics

74LCX125
Low-voltage CMOS quad bus buffer (3-state)
with 5 V tolerant inputs and outputs
Datasheet − production data
Features
■
5 V tolerant inputs and outputs
■
High speed
– tPD = 5.2 ns (max.) at VCC = 3 V
■
Power-down protection on inputs and outputs
■
Symmetrical output impedance
– |IOH| = IOL = 24 mA (min.) at VCC = 3 V
■
PCI bus levels guaranteed at 24 mA
■
Balanced propagation delay
– tPLH ≅ tPHL
Operating voltage range
– VCC (opr.) = 2.0 V to 3.6 V
■
Pin and function compatible with 74 series 125
■
Latch-up performance exceeds 500 mA
(JESD 17)
■
ESD performance
– HBM: 2000 V (MIL STD 883 method 3015)
– MM: 200 V
– CDM: 1000 V
■
Automotive
■
Industrial
■
Computer
■
Consumer
Table 1.
SO-14
Description
■
Applications
TSSOP14
The 74LCX125 device is a low-voltage CMOS
quad bus buffer manufactured with sub-micron
silicon gate and double-layer metal wiring C 2MOS
technology. It is ideal for low-power and highspeed 3.3 V applications and can be interfaced to
a 5 V signal environment for both inputs and
outputs.
The device requires the 3-state control input G to
be set high to place the output in the high
impedance state.
It has the same speed performance at 3.3 V as
the 5 V AC/ACT family, combined with lower
power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2 kV ESD immunity and transient excess
voltage.
Device summary
Order code
Temperature range
Package
Packaging
Marking
74LCX125TTR
-40/+85 °C
TSSOP14
Tape and reel
LCX125
74LCX125YTTR (1)
-40/+85 °C
TSSOP14 (automotive grade)
Tape and reel
LCX125Y
74LCX125MTR
-40/+85 °C
SO-14
Tape and reel
74LCX125
74LCX125YMTR(1)
-40/+85 °C
SO-14 (automotive grade)
Tape and reel
74LCX125Y
1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC
Q001 and Q002 or equivalent.
October 2012
This is information on a product in full production.
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www.st.com
16
Contents
74LCX125
Contents
1
Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
2.1
Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3
Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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74LCX125
1
Logic symbols and I/O equivalent circuit
Logic symbols and I/O equivalent circuit
Figure 1.
IEC logic symbols
Figure 2.
Input and output equivalent circuit
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Pin settings
74LCX125
2
Pin settings
2.1
Pin connections
Figure 3.
2.2
Pin connections (top through view)
Pin description
Table 2.
2.3
Pin description
Pin number
Symbol
Name and function
1, 4, 10, 13
1G TO 4G
Output enable input
2, 5, 9, 12
1A TO 4A
Data inputs
3, 6, 8, 11
1Y TO 4Y
Data outputs
7
GND
Ground (0 V)
14
VCC
Positive supply voltage
Truth table
Table 3.
Truth table
Inputs
Output
A
G
Y
a X(1)
H
a Z(2)
L
L
L
H
L
H
1. “Do not care”.
2. High impedance.
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74LCX125
3
Maximum ratings
Maximum ratings
Stressing the device above the rating listed in Table 4: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in Table 5: Recommended
operating conditions of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
Table 4.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
Supply voltage
-0.5 to +7.0
V
VI
DC input voltage
-0.5 to +7.0
V
VO
DC output voltage (V CC = 0 V)
-0.5 to +7.0
V
-0.5 to VCC + 0.5
V
VCC
state)(1)
VO
DC output voltage (high or low
IIK
DC input diode current
-50
mA
IOK
DC output diode current(2)
-50
mA
IO
DC output current
± 50
mA
ICC
DC supply current per supply pin
± 100
mA
IGND
DC ground current per supply pin
± 100
mA
Tstg
Storage temperature
-65 to +150
°C
300
°C
Value
Unit
2.0 to 3.6
V
TL
Lead temperature (10 sec.)
1. IO absolute maximum rating must be observed.
2. VO < GND.
Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol
VCC
Parameter
Supply voltage(1)
VI
Input voltage
0 to 5.5
V
VO
Output voltage (VCC = 0 V)
0 to 5.5
V
VO
Output voltage (high or low state)
0 to VCC
V
IOH, IOL
High or low level output current (VCC = 3.0 to 3.6 V)
± 24
mA
IOH, IOL
High or low level output current (VCC = 2.7 V)
± 12
mA
0 to 10
ns/V
dt/dv
Input rise and fall time
(2)
1. Truth table guaranteed: 1.5 V to 3.6 V.
2. VIN from 0.8 V to 2 V at VCC = 3.0 V.
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Electrical characteristics
4
74LCX125
Electrical characteristics
Table 6.
DC specifications
Test condition
Symbol
Parameter
High level input voltage
VIL
Low level input voltage
VOH
-40 to 85 °C
VCC
(V)
VIH
Min.
Unit
Max.
2.0
V
2.7 to 3.6
High level output
voltage
0.8
2.7 to 3.6
IO = -100 μA
VCC - 0.2
2.7
IO = -12 mA
2.2
IO = -18 mA
2.4
IO = -24 mA
2.2
3.0
VOL
Value
Low level output
voltage
V
2.7 to 3.6
IO = 100 μA
0.2
2.7
IO = 12 mA
0.4
IO = 16 mA
0.4
IO = 24 mA
0.55
3.0
V
V
II
Input leakage current
2.7 to 3.6
VI = 0 to 5.5 V
±5
μA
Ioff
Power OFF leakage
current
0
VI or VO = 5.5 V
10
μA
IOZ
High Impedance
output leakage current
2.7 to 3.6
VI = VIH or VIL
VO = 0 to VCC
±5
μA
Quiescent supply
current
2.7 to 3.6
VI = VCC or GND
10
ICC
VI or VO = 3.6 to 5.5 V
± 10
I incr. per input
2.7 to 3.6
VIH = VCC - 0.6 V
500
ΔICC
Table 7.
VOLP
VOLV
μA
Dynamic switching characteristics
Test condition
Symbol
μA
Parameter
Dynamic low level
quiet output(1)
TA = 25 °C
VCC
(V)
3.3
Value
Min.
CL = 50 pF
VIL = 0 V, VIH = 3.3 V
Unit
Typ. Max.
0.8
V
-0.8
1. Number of outputs defined as “n”. Measured with “n-1” outputs switching from HIGH to LOW or LOW to
HIGH. The remaining output is measured in the LOW state.
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74LCX125
Electrical characteristics
Table 8.
AC electrical characteristics
Test condition
Symbol
tPLH, tPHL
Parameter
Propagation delay
time
Output enable
tPZL, tPZH time to HIGH and
LOW level
Output disable
tPLZ, tPHZ time to HIGH and
LOW level
tOSLH
tOSHL
Output to output
skew time (1) (2)
VCC
(V)
Value
CL
(pF)
RL
(Ω)
ts = tr
(ns)
50
500
2.5
-40 to 85 °C
Min.
2.7
Unit
Max.
6.0
3.0 to 3.6
2.7
50
500
2.7
500
50
500
1.0
6.0
1.0
5.0
1.0
6.0
1.0
5.0
ns
2.5
3.0 to 3.6
3.0 to 3.6
5.2
2.5
3.0 to 3.6
50
ns
1.0
ns
2.5
1.0
ns
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|,
tOSHL = | tPHLm - tPHLn|).
2. Parameter guaranteed by design.
Table 9.
Capacitive characteristics
Test condition
Symbol
CIN
Parameter
Value
TA = 25 °C
VCC
(V)
Min.
Typ.
Unit
Max.
Input capacitance
3.3
VIN = 0 to VCC
5
pF
COUT
Output capacitance
3.3
VIN = 0 to VCC
10
pF
CPD
Power dissipation
capacitance(1)
3.3
fIN = 10 MHz
VIN = 0 or VCC
37
pF
1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the
operating current consumption without load. (Refer to Table 10: Test circuit. Average operating current can
be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per gate).
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Test circuit
5
Note:
74LCX125
Test circuit
Figure 4.
Test circuit
Table 10.
Test circuit
Test
Switch
tPLH, tPHL
Open
tPZL, tPLZ
6V
tPZH, tPHZ
GND
CL = 50 pF or equivalent (includes jig and probe capacitance)
RL = 500 Ω or equivalent
RT = ZOUT of pulse generator (typically 50 Ω ).
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6
Waveforms
Waveforms
Figure 5.
Propagation delay (f = 1 MHz; 50% duty cycle)
Figure 6.
Output enable and disable time (f = 1 MHz; 50% duty cycle)
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Package information
7
74LCX125
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com. ECOPACK
is an ST trademark.
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74LCX125
Package information
Figure 7.
SO-14 package outline
Table 11.
SO-14 package mechanical data
Dimensions
Symbol
mm
Min.
Typ.
inch
Max.
Min.
Typ.
Max.
A
1.35
1.75
0.053
0.069
A1
0.1
0.25
0.004
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
8.55
8.75
0.337
0.344
E
3.8
4.0
0.150
0.157
e
1.27
0.050
H
5.8
6.2
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.4
1.27
0.016
0.050
k
0°
8°
0°
8°
ddd
0.100
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11/16
Package information
Figure 8.
.
Table 12.
74LCX125
TSSOP14 package outline
TSSOP14 package mechanical data
Dimensions
Symbol
mm
Min.
Typ.
A
Max.
Min.
Typ.
1.2
A1
0.05
A2
0.8
b
Max.
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
4.9
5
5.1
0.193
0.197
0.201
E
6.2
6.4
6.6
0.244
0.252
0.260
E1
4.3
4.4
4.48
0.169
0.173
0.176
e
12/16
inch
1
0.65 BSC
K
0°
L
0.45
0.60
0.0256 BSC
8°
0°
0.75
0.018
Doc ID 4980 Rev 8
8°
0.024
0.030
74LCX125
Package information
Figure 9.
Tape and reel SO-14 outline
Drawing is not in scale.
Table 13.
Tape and reel SO-14 mechanical data
Dimensions
Symbol
mm
Min.
A
Typ.
inch
Max.
Min.
330
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
Typ.
0.504
22.4
0.519
0.882
Ao
6.4
6.6
0.252
0.260
Bo
9
9.2
0.354
0.362
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
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Package information
74LCX125
Figure 10. Tape and reel TSSOP14 outline
Drawing is not in scale.
.
Table 14.
Tape and reel TSSOP14 mechanical data
Dimensions
Symbol
mm
Min.
A
Max.
Min.
330
13.2
Typ.
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
14/16
Typ.
inch
0.504
22.4
0.519
0.882
Ao
6.7
6.9
0.264
0.272
Bo
5.3
5.5
0.209
0.217
Ko
1.6
1.8
0.063
0.071
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
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74LCX125
8
Revision history
Revision history
Table 15.
Document revision history
Date
Revision
15-Sep-2004
5
Ordering codes revision - pag. 1
13-Jul-2006
6
New template, temperature ranges updated
7
Added Applications on page 1
Updated Table 1: Device summary on page 1
Updated Top in Table 5: Recommended operating conditions
Updated ECOPACK® text in Section 7: Package information
Minor textual updates
8
Updated ESD performance in Features (updated HBM and MM,
added CDM).
Added 74LCX125YMTR device and “Marking” to Table 1, updated
temperature range and note 1.
Updated Section 3: Maximum ratings (added cross-references).
Removed “Operating temperature” from Table 5.
Reformatted Section 7: Package information.
Minor corrections throughout document.
20-Jun-2012
02-Oct-2012
Changes
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74LCX125
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