STMICROELECTRONICS 74LVX157TTR

74LVX157
LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER
WITH 5V TOLERANT INPUTS
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HIGH SPEED:
tPD = 5.1 ns (TYP.) at VCC = 3.3V
5V TOLERANT INPUTS
INPUT VOLTAGE LEVEL:
VIL=0.8V, VIH=2V at VCC=3V
LOW POWER DISSIPATION:
ICC = 2 µA (MAX.) at TA=25°C
LOW NOISE:
VOLP = 0.3V (TYP.) at VCC = 3.3V
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
IMPROVED LATCH-UP IMMUNITY
POWER DOWN PROTECTION ON INPUTS
DESCRIPTION
The 74LVX157 is a low voltage CMOS QUAD 2
CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology. It is ideal for low
power, battery operated and low noise 3.3V
applications.
It consists of four 2-input digital multiplexers with
common select and strobe inputs. When STROBE
SOP
TSSOP
Table 1: Order Codes
PACKAGE
T&R
SOP
TSSOP
74LVX157MTR
74LVX157TTR
input is held high, selection of data is inhibited and
all the outputs become low. The SELECT
decoding determines whether the A or B inputs
get routed to their corresponding Y outputs.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V
system. It combines high speed performance with
the true CMOS low power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Figure 1: Pin Connection And IEC Logic Symbols
August 2004
Rev. 3
1/12
74LVX157
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
PIN N°
SYMBOL
NAME AND FUNCTION
1
SELECT
2, 5, 11, 14
1A to 4A
3, 6, 10, 13
1B to 4B
4, 7, 9, 12
15
8
16
1Y to 4Y
STROBE
GND
VCC
Common Data Select
Inputs
Data Inputs From Source
A
Data Inputs From Source
B
Multiplexer Outputs
Strobe Input
Ground (0V)
Positive Supply Voltage
Table 3: Truth Table
INPUTS
OUTPUT
STROBE
SELECT
A
B
Y
H
L
L
L
L
X
L
L
H
H
X
L
H
X
X
X
X
X
L
H
L
L
H
L
H
X : Don’t Care
Table 4: Absolute Maximum Ratings
Symbol
VCC
Parameter
Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage
Value
Unit
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to VCC + 0.5
- 20
V
mA
IIK
DC Input Diode Current
IOK
DC Output Diode Current
± 20
mA
IO
DC Output Current
± 25
mA
ICC or IGND DC VCC or Ground Current
Storage Temperature
Tstg
TL
Lead Temperature (10 sec)
± 50
mA
-65 to +150
°C
300
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Table 5: Recommended Operating Conditions
Symbol
Value
Unit
Supply Voltage (note 1)
2 to 3.6
V
VI
Input Voltage
0 to 5.5
V
VO
Output Voltage
Top
Operating Temperature
VCC
dt/dv
Parameter
Input Rise and Fall Time (note 2) (VCC = 3.3V)
1) Truth Table guaranteed: 1.2V to 3.6V
2) VIN from 0.8V to 2.0V
2/12
0 to VCC
V
-55 to 125
°C
0 to 100
ns/V
74LVX157
Table 6: DC Specifications
Test Condition
Symbol
VIH
VIL
VOH
VOL
II
ICC
Parameter
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Quiescent Supply
Current
Value
TA = 25°C
VCC
(V)
Min.
2.0
3.0
3.6
2.0
3.0
3.6
Typ.
Max.
1.5
2.0
2.4
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
1.5
2.0
2.4
0.5
0.8
0.8
Max.
1.5
2.0
2.4
0.5
0.8
0.8
Unit
V
0.5
0.8
0.8
V
2.0
IO=-50 µA
1.9
2.0
3.0
IO=-50 µA
2.9
3.0
3.0
IO=-4 mA
2.58
2.0
IO=50 µA
0.0
0.1
0.1
0.1
3.0
IO=50 µA
0.0
0.1
0.1
0.1
3.0
IO=4 mA
0.36
0.44
0.55
3.6
VI = 5V or GND
± 0.1
±1
±1
µA
3.6
VI = VCC or GND
2
20
20
µA
1.9
1.9
2.9
2.9
2.48
2.4
V
V
Table 7: Dynamic Switching Characteristics
Test Condition
Symbol
VOLP
VOLV
VIHD
VILD
Parameter
Dynamic Low
Voltage Quiet
Output (note 1, 2)
Dynamic High
Voltage Input (note
1, 3)
Dynamic Low
Voltage Input (note
1, 3)
Value
TA = 25°C
VCC
(V)
Min.
3.3
-0.5
3.3
Typ.
Max.
0.3
0.5
-55 to 125°C
Min.
Min.
Max.
Unit
Max.
-0.3
2
CL = 50 pF
3.3
-40 to 85°C
V
0.8
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
3/12
74LVX157
Table 8: AC Electrical Characteristics (Input tr = tf = 3ns)
Test Condition
Symbol
Parameter
tPLH tPHL Propagation Delay
Time
(A, B - Y)
tPLH tPHL Propagation Delay
Time
(SELECT - Y)
tPLH tPHL Propagation Delay
Time
(STROBE - Y)
tOSLH
tOSHL
Output To Output
Skew Time (note1,
2)
VCC
(V)
CL
(pF)
2.7
2.7
Value
TA = 25°C
Min.
-40 to 85°C
-55 to 125°C
Typ.
Max.
Min.
Max.
Min.
Max.
15
50
6.6
9.1
12.5
16.0
1.0
1.0
15.5
19.0
1.0
1.0
16.5
20.0
3.3(*)
15
5.1
7.9
1.0
9.5
1.0
11.0
3.3(*)
2.7
2.7
50
7.6
11.4
1.0
13.0
1.0
14.0
15
50
8.9
11.4
16.9
20.4
1.0
1.0
20.5
24.0
1.0
1.0
21.5
26.0
3.3(*)
15
7.0
11.0
1.0
13.0
1.0
14.0
3.3(*)
2.7
2.7
50
9.5
14.5
1.0
16.5
1.0
17.5
15
50
9.1
11.6
17.6
21.1
1.0
1.0
20.5
20.4
1.0
1.0
21.5
21.4
3.3(*)
15
7.2
11.5
1.0
13.5
1.0
14.5
3.3(*)
2.7
50
9.7
15.0
1.0
17.0
1.0
18.0
50
3.3(*)
50
0.5
0.5
1.0
1.0
1.5
1.5
1.5
1.5
Unit
ns
ns
ns
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
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ± 0.3V
Table 9: Capacitive Characteristics
Test Condition
Symbol
Parameter
TA = 25°C
VCC
(V)
CIN
Input Capacitance
3.3
CPD
Power Dissipation
Capacitance
(note 1)
3.3
Value
Min.
fIN = 10MHz
Typ.
Max.
4
10
20
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
10
Unit
Max.
pF
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 Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/n (per circuit)
4/12
74LVX157
Figure 3: Test Circuit
CL =15/50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
Figure 4: Waveform - Propagation Delays For Inverting Conditions (f=1MHz; 50% duty cycle)
5/12
74LVX157
Figure 5: Waveform- Propagation Delays For Non-inverting Conditions (f=1MHz; 50% duty cycle)
6/12
74LVX157
SO-16 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.068
0.25
a2
MAX.
0.004
0.010
1.64
0.063
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45° (typ.)
D
9.8
10
0.385
0.393
E
5.8
6.2
0.228
0.244
e
1.27
e3
0.050
8.89
0.350
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
S
0.62
0.024
8° (max.)
0016020D
7/12
74LVX157
TSSOP16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
MAX.
1.2
A1
0.05
A2
0.8
b
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
0.0079
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
1
e
0.65 BSC
K
0˚
L
0.45
A
0.60
0.0256 BSC
8˚
0˚
0.75
0.018
8˚
0.024
0.030
A2
A1
b
e
K
c
L
E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
8/12
74LVX157
Tape & Reel SO-16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
TYP
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
6.45
6.65
0.254
0.262
Bo
10.3
10.5
0.406
0.414
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
9/12
74LVX157
Tape & Reel TSSOP16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
MAX.
MIN.
330
13.2
TYP.
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
10/12
TYP
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
74LVX157
Table 10: Revision History
Date
Revision
27-Aug-2004
3
Description of Changes
Ordering Codes Revision - pag. 1.
11/12
74LVX157
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