SEMICONDUCTOR TECHNICAL DATA
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The MC74LCX157 is a high performance, quad 2–input multiplexer
operating from a 2.7 to 3.6V supply. High impedance TTL compatible
inputs significantly reduce current loading to input drivers while TTL
compatible outputs offer improved switching noise performance. A VI
specification of 5.5V allows MC74LCX157 inputs to be safely driven from
5V devices.
Four bits of data from two sources can be selected using the Select
and Enable inputs. The four outputs present the selected data in the true
(non–inverted) form. The MC74LCX157 can also be used as a function
generator. Current drive capability is 24mA at the outputs.
•
•
•
•
•
•
LOW–VOLTAGE CMOS
QUAD 2–INPUT MULTIPLEXER
Designed for 2.7 to 3.6V VCC Operation
5V Tolerant Inputs — Interface Capability With 5V TTL Logic
D SUFFIX
16–LEAD PLASTIC SOIC PACKAGE
CASE 751B–05
LVTTL Compatible
LVCMOS Compatible
24mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current (10µA) Substantially Reduces System
Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
VCC
16
E
I0c
I1c
Zc
I0d
I1d
Zd
15
14
13
12
11
10
9
M SUFFIX
16–LEAD PLASTIC SOIC EIAJ PACKAGE
CASE 966–01
SD SUFFIX
16–LEAD PLASTIC SSOP PACKAGE
CASE 940B–03
DT SUFFIX
16–LEAD PLASTIC TSSOP PACKAGE
CASE 948F–01
1
2
3
4
5
6
7
8
S
I0a
I1a
Za
I0b
I1b
Zb
GND
PIN NAMES
Figure 1. 16–Lead Pinout (Top View)
Pins
Function
I0n
I1n
E
S
Zn
Source 0 Data Inputs
Source 1 Data Inputs
Enable Input
Select Input
Outputs
3/97
Motorola, Inc. 1997
1
REV 1
MC74LCX157
S
E
I0a
I1a
I0b
I1b
I0c
I1c
I0d
I1d
1
15
2
4
Za
3
5
7
Zb
6
14
12
Zc
13
11
9
Zd
10
Figure 2. Logic Diagram
TRUTH TABLE
Inputs
Outputs
E
S
I0n
I1n
Zn
H
L
L
L
L
X
H
H
L
L
X
X
X
L
H
X
L
H
X
X
L
L
H
L
H
H = High Voltage Level; L = Low Voltage Level; X = High or Low Voltage Level ; For ICC Reasons DO NOT
FLOAT Inputs
MOTOROLA
2
LCX DATA
BR1339 — REV 3
MC74LCX157
ABSOLUTE MAXIMUM RATINGS*
Symbol
Parameter
Value
Condition
Unit
VCC
DC Supply Voltage
–0.5 to +7.0
V
VI
DC Input Voltage
–0.5 ≤ VI ≤ +7.0
V
VO
DC Output Voltage
–0.5 ≤ VO ≤ VCC + 0.5
Note 1.
V
IIK
DC Input Diode Current
–50
VI < GND
mA
IOK
DC Output Diode Current
–50
VO < GND
mA
+50
VO > VCC
mA
IO
DC Output Source/Sink Current
±50
mA
ICC
DC Supply Current Per Supply Pin
±100
mA
IGND
DC Ground Current Per Ground Pin
±100
mA
TSTG
Storage Temperature Range
–65 to +150
°C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or
conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is
not implied.
1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Operating
Data Retention Only
Min
Typ
Max
Unit
2.0
1.5
3.3
3.3
3.6
3.6
V
0
5.5
V
0
VCC
V
VCC
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH
HIGH Level Output Current, VCC = 3.0V – 3.6V
–24
mA
IOL
LOW Level Output Current, VCC = 3.0V – 3.6V
24
mA
IOH
HIGH Level Output Current, VCC = 2.7V – 3.0V
–12
mA
IOL
LOW Level Output Current, VCC = 2.7V – 3.0V
TA
Operating Free–Air Temperature
∆t/∆V
Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V,
VCC = 3.0V
(HIGH or LOW State)
12
mA
–40
+85
°C
0
10
ns/V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol
Characteristic
Condition
Min
2.0
VIH
HIGH Level Input Voltage (Note 2.)
2.7V ≤ VCC ≤ 3.6V
VIL
LOW Level Input Voltage (Note 2.)
2.7V ≤ VCC ≤ 3.6V
VOH
HIGH Level Output Voltage
VOL
LOW Level Output Voltage
Max
V
0.8
2.7V ≤ VCC ≤ 3.6V; IOH = –100µA
VCC – 0.2
VCC = 2.7V; IOH = –12mA
2.2
VCC = 3.0V; IOH = –18mA
2.4
VCC = 3.0V; IOH = –24mA
2.2
Unit
V
V
2.7V ≤ VCC ≤ 3.6V; IOL = 100µA
0.2
VCC = 2.7V; IOL= 12mA
0.4
VCC = 3.0V; IOL = 16mA
0.4
VCC = 3.0V; IOL = 24mA
0.55
V
2. These values of VI are used to test DC electrical characteristics only.
LCX DATA
BR1339 — REV 3
3
MOTOROLA
MC74LCX157
DC ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to +85°C
Symbol
Characteristic
II
Input Leakage Current
ICC
Quiescent Supply Current
∆ICC
Increase in ICC per Input
Condition
Min
Max
Unit
2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V
±5.0
µA
2.7 ≤ VCC ≤ 3.6V; VI = GND or VCC
10
µA
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI ≤ 5.5V
±10
µA
2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V
500
µA
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Limits
TA = –40°C to +85°C
VCC = 3.0V to 3.6V
Symbol
Parameter
VCC = 2.7V
Waveform
Min
Max
Max
Unit
tPLH
tPHL
Propagation Delay
In to Zn
1
1.5
1.5
5.8
5.8
6.3
6.3
ns
tPLH
tPHL
Propagation Delay
S to Zn
1,2
1.5
1.5
7.0
7.0
8.0
8.0
ns
tPLH
tPHL
Propagation Delay
E to Zn
2
1.5
1.5
7.0
7.0
8.0
8.0
ns
tOSHL
Output–to–Output Skew
1.0
ns
tOSLH
(Note 3.)
1.0
3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (tOSHL) or LOW–to–HIGH (tOSLH); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol
Characteristic
Condition
VOLP
Dynamic LOW Peak Voltage (Note 4.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
Min
Typ
0.8
Max
Unit
V
VOLV
Dynamic LOW Valley Voltage (Note 4.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
4. 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.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
CIN
Input Capacitance
VCC = 3.3V, VI = 0V or VCC
7
pF
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
pF
CPD
Power Dissipation Capacitance
10MHz, VCC = 3.3V, VI = 0V or VCC
25
pF
MOTOROLA
4
LCX DATA
BR1339 — REV 3
MC74LCX157
2.7V
1.5V
In, S
1.5V
0V
tPHL
tPLH
VOH
1.5V
Zn
1.5V
VOL
WAVEFORM 1 – NON–INVERTING PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
1.5V
E, S
1.5V
0V
tPHL
tPLH
VOH
1.5V
Zn
1.5V
VOL
WAVEFORM 2 – INVERTING PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 3. AC Waveforms
VCC
PULSE
GENERATOR
DUT
RT
CL
RL
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
Figure 4. Test Circuit
LCX DATA
BR1339 — REV 3
5
MOTOROLA
MC74LCX157
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
–A
–
16
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
9
–B
–
1
P 8 PL
0.25 (0.010)
8
M
B
M
G
K
DIM
A
B
C
D
F
G
J
K
M
P
R
F
R X 45°
C
–T
SEATING
–
J
M
PLANE
D 16 PL
0.25 (0.010)
M
T
B
S
A
S
M SUFFIX
PLASTIC SOIC EIAJ PACKAGE
CASE 966–01
ISSUE O
16
LE
9
Q1
M_
E HE
L
8
1
DETAIL P
Z
D
e
c
A1
b
0.13 (0.005)
MOTOROLA
M
0.10 (0.004)
6
INCHES
MIN
MAX
0.386 0.393
0.150 0.157
0.054 0.068
0.014 0.019
0.016 0.049
0.050 BSC
0.008 0.009
0.004 0.009
0°
7°
0.229 0.244
0.010 0.019
NOTES:
1 DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2 CONTROLLING DIMENSION: MILLIMETER.
3 DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED
AT THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
4 TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
5 THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
VIEW P
A
MILLIMETERS
MIN
MAX
9.80 10.00
4.00
3.80
1.75
1.35
0.49
0.35
1.25
0.40
1.27 BSC
0.25
0.19
0.25
0.10
7°
0°
6.20
5.80
0.50
0.25
DIM
A
A1
b
c
D
E
e
HE
L
LE
M
Q1
Z
MILLIMETERS
MIN
MAX
--2.05
0.05
0.20
0.35
0.50
0.18
0.27
9.90
10.50
5.10
5.45
1.27 BSC
7.40
8.20
0.50
0.85
1.10
1.50
10 _
0_
0.70
0.90
--0.78
INCHES
MIN
MAX
--0.081
0.002
0.008
0.014
0.020
0.007
0.011
0.390
0.413
0.201
0.215
0.050 BSC
0.291
0.323
0.020
0.033
0.043
0.059
10 _
0_
0.028
0.035
--0.031
LCX DATA
BR1339 — REV 3
MC74LCX157
OUTLINE DIMENSIONS
SD SUFFIX
PLASTIC SSOP PACKAGE
CASE 940B–03
ISSUE B
16X
K REF
0.12 (0.005)
T U
M
S
V
S
0.25 (0.010)
N
L/2
16
9
M
B
L
N
F
PIN 1
IDENT
1
8
DETAIL E
–U–
A
–V–
K
J
0.20 (0.008)
M
T U
ÉÉÉÉ
ÇÇÇÇ
ÇÇÇÇ
ÉÉÉÉ
S
J1
K1
SECTION N–N
0.076 (0.003)
–T–
SEATING
PLANE
–W–
C
D
G
H
LCX DATA
BR1339 — REV 3
DETAIL E
7
NOTES:
6 DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
7 CONTROLLING DIMENSION: MILLIMETER.
8 DIMENSION A DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS. MOLD FLASH
OR GATE BURRS SHALL NOT EXCEED 0.15
(0.006) PER SIDE.
9 DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
10 DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION/INTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN
EXCESS OF K DIMENSION AT MAXIMUM
MATERIAL CONDITION. DAMBAR INTRUSION
SHALL NOT REDUCE DIMENSION K BY MORE
THAN 0.07 (0.002) AT LEAST MATERIAL
CONDITION.
11 TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
12 DIMENSION A AND B ARE TO BE DETERMINED
AT DATUM PLANE –W–.
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
6.07
6.33
5.20
5.38
1.73
1.99
0.05
0.21
0.63
0.95
0.65 BSC
0.73
0.90
0.09
0.20
0.09
0.16
0.25
0.38
0.25
0.33
7.65
7.90
0_
8_
INCHES
MIN
MAX
0.238
0.249
0.205
0.212
0.068
0.078
0.002
0.008
0.024
0.037
0.026 BSC
0.028
0.035
0.003
0.008
0.003
0.006
0.010
0.015
0.010
0.013
0.301
0.311
0_
8_
MOTOROLA
MC74LCX157
OUTLINE DIMENSIONS
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 948F–01
ISSUE O
16X K REF
0.10 (0.004)
0.15 (0.006) T U
M
T U
V
S
S
S
ÇÇÇ
ÉÉ
ÇÇÇ
ÉÉ
ÇÇÇ
K
K1
2X
L/2
16
9
J1
B
–U–
L
SECTION N–N
J
PIN 1
IDENT.
8
1
N
0.25 (0.010)
0.15 (0.006) T U
S
A
–V–
M
N
NOTES:
1 DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2 CONTROLLING DIMENSION: MILLIMETER.
3 DIMENSION A DOES NOT INCLUDE MOLD FLASH.
PROTRUSIONS OR GATE BURRS. MOLD FLASH
OR GATE BURRS SHALL NOT EXCEED 0.15
(0.006) PER SIDE.
4 DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED
0.25 (0.010) PER SIDE.
5 DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.
6 TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7 DIMENSION A AND B ARE TO BE DETERMINED
AT DATUM PLANE –W–.
F
DETAIL E
–W–
C
0.10 (0.004)
–T– SEATING
PLANE
DETAIL E
H
D
G
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
4.90
5.10
4.30
4.50
–––
1.20
0.05
0.15
0.50
0.75
0.65 BSC
0.18
0.28
0.09
0.20
0.09
0.16
0.19
0.30
0.19
0.25
6.40 BSC
0_
8_
INCHES
MIN
MAX
0.193
0.200
0.169
0.177
–––
0.047
0.002
0.006
0.020
0.030
0.026 BSC
0.007
0.011
0.004
0.008
0.004
0.006
0.007
0.012
0.007
0.010
0.252 BSC
0_
8_
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
Mfax is a trademark of Motorola, Inc.
How to reach us:
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P.O. Box 5405, Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447
JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315
Mfax: [email protected] – TOUCHTONE 602–244–6609
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– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
INTERNET: http://www.mot.com/SPS/
◊
MOTOROLA
8
MC74LCX157/D
LCX DATA
BR1339 — REV 3