NSC MM74HCT151

MM54HCT151/MM74HCT151
8-Channel Digital Multiplexer
General Description
This high speed Digital multiplexer utilizes advanced silicongate CMOS technology. Along with the high noise immunity
and low power dissipation of standard CMOS integrated circuits, it possesses the ability to drive 10 LS-TTL loads. The
MM54HCT151/MM74HCT151 selects one of the 8 data
sources, depending on the address presented on the A, B,
and C inputs. It features both true (Y) and complement (W)
outputs. The STROBE input must be at a low logic level to
enable this multiplexer. A high logic level at the STROBE
forces the W output high and the Y output low.
MM54HCT/MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS
Connection and Logic Diagrams
devices. These parts are also plug-in replacements for LSTTL devices and can be used to reduce power consumption
in existing designs.
Features
Y
Y
Y
Y
Y
Typical propagation delay: 20 ns
Low quiescent supply current: 40 mA maximum
(74HCT Series)
Low input current: 1 mA maximum
Fanout of 10 LS-TTL loads
TTL input compatible
Truth Table
Dual-In-Line Package
Inputs
TL/F/9399 – 1
Top View
C
Select
B
A
X
L
L
L
L
H
H
H
H
X
L
L
H
H
L
L
H
H
X
L
H
L
H
L
H
L
H
Outputs
Strobe
S
Y
W
H
L
L
L
L
L
L
L
L
L
D0
D1
D2
D3
D4
D5
D6
D7
H
D0
D1
D2
D3
D4
D5
D6
D7
H e High Level, L e Low Level, X e Don’t Care
D0, D1...D7 e the level of the respective D input
Order Number MM54HCT151 or MM74HCT151
TL/F/9399 – 2
C1995 National Semiconductor Corporation
TL/F/9399
RRD-B30M115/Printed in U. S. A.
MM54HCT151/MM74HCT151 8-Channel Digital Multiplexer
November 1995
Absolute Maximum Ratings (Notes 1 & 2)
Operating Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (VCC)
DC Input or Output Voltage
(VIN, VOUT)
b 0.5V to a 7.0V
Supply Voltage (VCC)
b 1.5V to VCC a 1.5V
DC Input Voltage (VIN)
b 0.5V to VCC a 0.5V
DC Output Voltage (VOUT)
g 20 mA
Clamp Diode Current (IIK, IOK)
g 25 mA
DC Output Current, per Pin (IOUT)
g 50 mA
DC VCC or GND Current, per Pin (ICC)
b 65§ C to a 150§ C
Storage Temperature Range (TSTG)
Power Dissipation (PD)
(Note 3)
600 mW
S.O. Package only
500 mW
Lead Temperature (TL)
(Soldering, 10 seconds)
260§ C
Operating Temp. Range (TA)
MM74HCT
MM54HCT
Min
4.5
Max
5.5
0
VCC
Units
V
V
b 40
b 55
a 85
a 125
§C
§C
500
ns
Input Rise or Fall Times
(tr, tf)
DC Electrical Characteristics (Note 4)
Symbol
Parameter
Conditions
VCC
TA e 25§ C
74HCT
54HCT
TA e b40§ C to a 85§ C TA e b55§ C to a 125§ C Units
Typ
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
2.0
2.0
2.0
V
VIL
Maximum Low Level
Input Voltage
0.8
0.8
0.8
V
VOH
Minimum High Level VIN e VIH or VIL
Output Voltage
lIOUTl s 20 mA
4.4
4.4
4.4
V
lIOUTl s 4.0 mA
lIOUTl s 4.8 mA
4.5V 4.2 3.98
5.5V 5.2 4.98
3.84
4.84
3.7
4.7
V
V
Maximum Low Level VIN e VIH or VIL
Output Voltage
lIOUTl e 20 mA
lIOUTl e 4.0 mA
lIOUTl e 4.8 mA
0
0.1
4.5V 0.2 0.26
5.5V 0.2 0.26
0.1
0.33
0.33
0.1
0.4
0.4
V
V
V
g 0.1
g 1.0
g 1.0
mA
8.0
80
160
mA
0.55
0.65
mA
4.5V
VIN e VIH or VIL
VOL
IIN
Maximum Input
Current
VIN e VCC or GND
ICC
Maximum Quiescent VIN e VCC or GND
Supply Current
IOUT e 0 mA
6.0V
VIN e 2.4V or 0.5V (Note 4)
0.25 0.4
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating Ð plastic ‘‘N’’ package: b 12 mW/§ C from 65§ C to 85§ C; ceramic ‘‘J’’ package: b 12 mW/§ C from 100§ C to 125§ C.
Note 4: For a power supply of 5V g 10% the worst case output voltages (VOH, and VOL) occur for HCT at 4.5V. Thus the 4.5V values should be used when
designing with this supply. Worst case VIH and VIL occur at VCC e 5.5V and 4.5V respectively. (The VIH value at 5.5V is 3.85V.) The worst case leakage current
(IIN, ICC, and IOZ) occur for CMOS at the higher voltage and so the 6.0V values should be used.
2
AC Electrical Characteristics VCC e 5V, TA e 25§ C, CL e 15 pF, tr e tf e 6 ns
Typ
Guaranteed
Limit
Units
Maximum Propagation Delay
A, B or C to Y
26
35
ns
tPHL, tPLH
Maximum Propagation Delay
A, B or C to W
26
35
ns
tPHL, tPLH
Maximum Propagation Delay
Any D to Y
22
29
ns
tPHL, tPLH
Maximum Propagation Delay
any D to W
22
29
ns
tPHL, tPLH
Maximum Propagation Delay
Strobe to Y
17
23
ns
tPHL, tPLH
Maximum Propagation Delay
Strobe to W
17
23
ns
Symbol
Parameter
tPHL, tPLH
Conditions
AC Electrical Characteristics VCC e 5.0V g 10%, CL e 50 pF, tr e tf e 6 ns (unless otherwise specified)
Symbol
Parameter
Conditions
TA e 25§ C
Typ
74HCT
TA eb40§ C to a 85§ C
54HCT
TA eb55§ C to a 125§ C
Units
Guaranteed Limits
tPHL, tPLH
Maximum Propagation Delay
A, B or C to Y
33
46
58
69
ns
tPHL, tPLH
Maximum Propagation Delay
A, B or C to W
33
46
58
69
ns
tPHL, tPLH
Maximum Propagation Delay
any D to Y
27
39
49
59
ns
tPHL, tPLH
Maximum Propagation Delay
any D to W
27
39
49
59
ns
tPHL, tPLH
Maximum Propagation Delay
Strobe to Y
21
28
35
42
ns
tPHL, tPLH
Maximum Propagation Delay
Strobe to W
21
28
35
42
ns
tTLH, tTHL
Maximum Output Rise
and Fall Time
8
15
19
23
ns
CPD
Power Dissipation
Capacitance (Note 5)
CIN
Maximum Input
Capacitance
(per package)
110
pF
5
10
pF
Note 5: CPD determines the no load dynamic power consumption, PD e CPD VCC2 f a ICC VCC, and the no load dynamic current consumption, IS e CPD VCC f a ICC.
3
MM54HCT151/MM74HCT151 8-Channel Digital Multiplexer
Physical Dimensions inches, (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number MM54HCT151J or MM74HCT151J
NS Package Number J16A
Molded Dual-In-Line Package (N)
Order Number MM74HCT151N
NS Package Number N16E
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
National Semiconductor
Corporation
1111 West Bardin Road
Arlington, TX 76017
Tel: 1(800) 272-9959
Fax: 1(800) 737-7018
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
National Semiconductor
Europe
Fax: (a49) 0-180-530 85 86
Email: cnjwge @ tevm2.nsc.com
Deutsch Tel: (a49) 0-180-530 85 85
English Tel: (a49) 0-180-532 78 32
Fran3ais Tel: (a49) 0-180-532 93 58
Italiano Tel: (a49) 0-180-534 16 80
National Semiconductor
Hong Kong Ltd.
13th Floor, Straight Block,
Ocean Centre, 5 Canton Rd.
Tsimshatsui, Kowloon
Hong Kong
Tel: (852) 2737-1600
Fax: (852) 2736-9960
National Semiconductor
Japan Ltd.
Tel: 81-043-299-2309
Fax: 81-043-299-2408
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.