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DM74S253N
7 V, dual TRI-STATE 1 of 4 line data selector/multiplexer
National _
l Semiconductor
DM54S253/DM74S253
Dual TRl-STATE® 1 of 4 Line Data Selectors/Multiplexers
General Description
Each of these Schottky-clamped data selectors/multiplex-
ers contains inverters and drivers to supply fully comple-
mentary, on-chip, binary decoding data selection to the
AND-OR gates. Separate output control inputs are provided
for each of the two four-Iine sections.
The TRI-STATE outputs can Interface directly with data
lines of bus-organized systems. With all but one of the com-
mon outputs disabled (at a high impedance state), the low
impedance of the single enable output will drive the bus line
to a high or low logic level.
Features
I: THI-STATE version of $153 with same pin-out
I: Schottky-diode-clamped transistors
n Permits multiplexing from N lines to 1 line
I: Performs parallel-T-serial conversion
II Strobe/output control
a High fan-out totem-pole outputs
a Typical propagation delay
From data to output 6 ns
From select to output 12 ns
a Typical power dissipation 275 mW
Connection Diagram
Dual-ln-Llne Package
OUTPUT
CONTROL DATA 1NPUTS OUTPUT
"CC G2 SELECT 2C3 2C2 2Ct 2 0 "
[16 15 '14 " " ll 10 9
>|.—-°- m
1 2 a a 5 l6 I7 13
OUTPUT B 1c: 1C2 1L1 , o OUTPUT GND
N----------.
CT,'''" SELECT DATAiNPUTS v1
TL/F/6491-1
Order Number DM54S253d, DM54S253W or DM743253N
NS Package Number J16A, N16E or W16A
Function Table
Select Output
Inputs Data Inputs Control Output
B A co Ct C2 ca G Y
X X X X X X H 2
L L L X X x L L
L L H X x X L H
L H X L X X L L
L H X H X x L H
H L X X L x L L
H L x X H X L H
H H x X X L L L
H H X X X H L H
Address inputs A and B are common to both sections.
H = High Level, L = Low Level. X _ Don't Care, 2 = High Impedance
Absolute Maximum Ratings (Note)
If MllltaryfAesroapaee specified dovlcea are required,
please tttttttttttt the National Semiconductor Sales
offltttt/Dlsmttutore for availability and specifications.
Supply Voltage 7V
Input Voltage 5.5V
Note: The "Absolute Maximum Ratings" are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits The
parametric values defined in the "Eletttrittal Characteristics"
table are not guaranteed at the absolute maximum ratings.
The "Recommended Operating Ctmditlons" table will define
Operating Free Air Temperature Range
Storage Temperature Range
C to + 125°C
ty'C to + 70'C
--titPC to +150'C
Recommended Operating Conditions
the conditions for actual device operation.
Symbol Parameter DM548253 DM748253 Units
Mln Nom Max Mln Nom Max
Vcc Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
ViH High Level Input Voltage 2 2 V
VIL Low Level Input Voltage 0.8 0.8 V
IOH High Level Output Current -2 -6.5 mA
IOL Low Level Output Current 20 20 mA
TA Free Air Operating Temperature -55 125 0 70 ''C
Electrical Characteristics over recommended operating free air temperature (unless otherwise noted)
Symbol Parameter Conditions Min Typ Max Units
(Note 1)
v. Input Clamp Voltage Vcc = Min, I. = - 18 mA -1.2 V
VOH High Level Output Vcc = Min, lor, = Max DM54 2.4 3.4 V
VOL Low Level Output Vcc = Min, lOL = Max f) 5 V
Voltage VIH = Min, W. == Max .
ll InputCurrent tt Max Voc = Max, VI = 5.5V 1 mA
Input Voltage
IIH High Level Input Vcc --- Max, V. = 2.7V 50 p A
Current
IIL Low Level Input V00 = Max, VI = 0.5V --2 mA
Current
lozH Oft-State Output Currentwith VOC = Max, V0 = 2.4V
High Level Output V.” = Min,1h = Max 50 pA
Voltage Applied
IOZL Off-State Output Current with Vcc = Max, Vo = 0.5V -50 A
Low LevelOutput " = Min, W. = Max "
Voltage Applied
los Short Circuit Vcc = Max DM54 -40 --100 m A
Output Current (Note 2) DM74 - 40 - 100
ICC Supply Current Vcc = Max (Note 3) 55 70 mA
Not. 1: All typicals are at Vcc --- 5V, TA = 25'C.
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second
Note 3: b; is measured with all outputs open.
Switching Characteristics at Vcc = 5V and TA = 25°C (See Section 1 for Test Waveforms and Output Load)
Rt. = 2800
S b I P t From (Input) F
ym o arame er To (Output) CL - 15 p th. - 50 pF Unlts
Min Max Min Max
tPLH Propagation Delay Time Data 9 12 ns
Low to High Level Output to Y
tpHL Propagation Delay Time Data 9 12 ns
High to Low Level Output to Y
tpLH Propagation Delay Time Select 1 8 21 ns
Low to High Level Output to Y
tpHL Propagation Delay Time Select 18 21 ns
High to Low Level Output to Y
tPZH Output Enable Time Output Control
to High Level Output to Y 16,5 19.5 ns
tPZL Output Enable Time Output Control 1 8 21 ns
to Low Level Output to Y
tsz Output Disable Time to Output Control 9 5 ns
High Level Output (Note 1) to Y .
tPLZ Output Disable Time Output Control 15 ns
to Low Level Output (Note 1) to Y
Note 1: CL = 5 pF.
Logic Diagram
OUTPUT (1)
CONTROL GI Itil
”1(5) m
DATA , (4) OUTPUT YI
L 1C3t ,
SELECT" (14)
DATA 2 (12) (9)
OUTPUT "
ouwurm‘)
CONTROL G2
TL/F/64B1-2
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
corp/docs/irwestor_relations/Pr_09_23_201 1_national_semiconductor.html
This file is the datasheet for the following electronic components:
DM54S253W - product/dm545253w?HQS=T|-nu|I-nulI-dscatalog-df-pf-null-wwe
DM74S253N - product/dm743253n?HQS=T|-nu|I-nulI-dscatalog-df-pf-nuIl-wwe
DM54S253J - product/dm548253j?HQS=T|—nu|I-nulI-dscatalog-df—pf—nuII-wwe
