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DM74ALS14M-DM74ALS14N
Hex Inverter with Schmitt Trigger Inputs
gil National]
1 SemittortdutMr
DM74ALS14
General Description
This device contains six independent gates, each of which
performs the logic INVERT function. Each input has hyster-
esis which increases the noise immunity and transforms a
slowly changing input signal to a fast changing, jitter-free
output.
Features
a Input Hysteresis
B Low output noise generation
I: High input noise immunity
Hex Inverter with Schmitt Trigger Inputs
December 1990
n Switching specification at 50 pF
" Switching specifications guaranteed over full tempera-
ture and Vcc range
a Advanced oxide-isolated, ion-implanted Schottky TTL
process
I! Functionally and pin-for-pin compatible with Schottky
and Low Power Schottky TTL counterparts
I: Improved AC performance over low power Schottky
counterpart
Connection Diagram
Function Table
vcc A6 Y6 A5 t5 A4 "
I14 " 12 11 I10 9 a
AL TL TL
1 2 3 4 5 s Ir
A1 tl A2 T2 A3 Y3 GND
Order Number DM74ALS14M, DM74ALS14N or DM74ALS14SJ
See NS Package Number M14A, M140 or N14A
TL/F/8773-1
Output
H = High Logic Level
L = Low Logic Level
©1990 National Semiconductor Corporation TL/F/8773
I RRD-Bi?0Mt2tVPrtnted In U. S. A.
SJNdUI 1955!“. lllluuaS llllM JauaAU| xaH Vl-S'IVVLING
Absolute Maximum Ratings
Supply Voltage 7V
Input Voltage 7V
Storage Temperature Range - 65"C to + 150°C
Operating Free Air Temperature Range
DM74ALS 0°C to + 70''C
Typical OJA
N Package 78.5°C/W
M Package 109.0°C/W
Recommended Operating Conditions
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 "Electrical Characteristics"
table are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions" table will define
the conditions for actual device operation.
Symbol Parameter Min Nom Max Units
Vcc Supply Voltage 4.5 5 5.5 V
VT+ Positive-Going Input Vcc = Min to Max 1.4 2
Threshold Voltage Vcc = 5V 1.55 1.85 V
VT, Negative-Going Input Vcc = Min to Max 0.75 1.2
Threshold Voltage Vcc = 5V 0.85 1.1 V
HYS Input Hysteresis Vcc -- Minto Max 0.5 V
Vcc = 5V 0.6
lor, High Level Output Current -0.4 mA
IOL Low Level Output Current 8 mA
TA Operating Free Air Temperature Range 0 70 "C
Electrical Characteristics over recommended tree air temperature range (unless otherwise noted)
Symbol Parameter Test Conditions Min Typ Max Units
VIC InputCIamp Voltage VCC = Min, I1 = -18 mA -I.5 V
VOH High Level OutpulVoltage Vcc = 4.5V to 5.5V, IOH = Max Vcc - 2 V
VOL Low Level Output Voltage Vcc = Min IOL = 4 mA 0.25 0.4 V
IOL = 8 mA 0.35 0.5 V
IT+ 11pyt Current at Positive- Vcc = 5V, V. = VT+ 20 p. A
Going Threshold Voltage
IT- Inpyt Current at Negative- VCC = 5V, V. _--. VT- --100 F A
Going Threshold Voltage
I. Input Current at Maximum Vcc = Max, VI : 7V 100 HA
Input Voltage
IIH High Level Input Current VCC = Max, V. = 2.7V 20 0A
IIL Low Level InputCurrent Vcc = Max, VI = 0.4V -100 HA
lo Output Drive Current Vcc = Max, V0 = 2.25V -30 -112 mA
ICCH Supply Current with Vcc --, Max 1 2 m A
Outputs High
ICCL Supply Current with Vcc = Max " m A
Outputs Low
Electrical Characteristics over recommended tree air temperature range (unless otherwise noted) (Continued)
Symbol Parameter Test Conditions Min Typ Max Units
VOLP Quiet Output Maximum Vcc = 5.0V, TA = 25'C O.16 V
Dynamic VOL (Figures l a Notes l, 2) .
VOLV QuietOutput Minimum Vcc = 5.0V. TA = 25°C -o 27 V
Dynamic VOL (Figures t, aNotes1, 2) .
VIHD Minimum High Level Vcc = 5.0V. TA = 25'C 1 44 V
Dynamic Input Voltage (Notes 1, 3) .
ViLD Maximum Low Level VCC = 5.0V, TA = 25''C 1 15 V
Dynamic Input Voltage (Notes l, 3) .
Note l.. Plastic DIP package
Note 2: n = number of device outputs, n - 1 outputs switching, each driven 0V to 3V one output © GND.
Note 3: n = number ot device outputs, n outputs switching, n - 1 inputs switching 0V to 3V. Input under test switching 3V to threshold (VILDX 0V to threshold
(VIHD)'.1 = 1 MHz.
ALS Noise Characteristics
The setup of a noise characteristics measurement is critical ACTlVE
to the accuracy and repeatability of the tests. The following OUTPUTS
is a brief description of the setup used to measure the noise
characteristics of ALS.
Equipment: QUIET
Word Generator OUTPUT
UNDER TEST
Printed Circuit Board Test Fixture
Dual Trace Oscilloscope
Procedure:
1. Verify Test Fixture Loading: Standard Load 50 pF, 5000.
2. Deskew the word generator so that no two channels have
greater than 150 ps skew between them. This requires
that the oscilloscope be deskewed first. Swap out the
channels that have more than 150 ps of skew until all
channels being used are within 150 ps. It is important to
deskew the word generator channels before testing. This
will ensure that the outputs switch simultaneously.
3. Terminate all inputs and outputs to ensure proper loading
of the outputs and that the input levels are at the correct
"""""""""" Votv
TL/F/8773-2
FIGURE 1. Quiet Output Noise Voltage Waveforms
Note A. Vow and VOHP are measured with respect to VOH reference. VOLv
and Vou, are measured with respect to ground relerence.
Note B. Input pulses have the following characteristics: f -- 1 MHz, k =
3 ns,t, = 3 ns. skew < 150 ps.
6. Set the word generator input levels at 0V LOW and 3V
HIGH. Verity levels with a digital volt meter.
VOLP/VOLv and VOHP/VOHVI
q Determine the quiet output pin that demonstrates the
greatest noise levels. The worst case pin will usually be
voltage.
4. Set VCC to 5.0V.
5. Set the word generator to toggle all but one output at a
frequency of 1 MHz. Greater frequencies will increase
DUT heating and affect the results of the measurement.
the furthest from the ground pin. Monitor the output volt-
ages using a son coaxial cable plugged into a standard
SMB type connector on the test fixture. Do not use an
active FET probe.
. Verify that the GND reference recorded on the oscillo-
scope has not drifted to ensure the accuracy and repeat-
ability of the measurements.
ALS Noise Characteristics (Continued)
VILD and VIHD:
0 Monitor one of the switching outputs using a 50ft coaxial
cable plugged into a standard SMB type connector on
the test fixture. Do not use an active FET probe.
. First increase the input LOW voltage level, VIL, until the
output begins to oscillate. Oscillation is defined as noise
on the output LOW level that exceeds VIL limits, or on
output HIGH levels that exceed VIH limits. The input
LOW voltage level at which oscillation occurs is defined
as VILD-
. Next decrease the input HIGH voltage level on the word
generator, VIH until the output begins to oscillate. Oscilla-
tion is defined as noise on the output LOW level that
exceeds " limits, or on output HIGH levels that exceed
I/m limits. The input HIGH voltage level at which oscilla-
tion occurs is defined as VIHD-
Verity that the GND reference recorded on the oscillo-
scope has not drifted to ensure the accuracy and repeat-
ability of the measurements.
7-Inputs 4500
/ = tr-
WORD 0scilkmmpe
GENERATOR g 50 PF son Inputs
450.0,
( L-l>--_t AAN a...-..-.,,
GND Probes are grounded as
GND is supplied via slr
a copper plane
g close to DUT pins as possible.
Load capacitors are placed
as close to DOT as possible.
TL/F/8773-3
FIGURE 2. Simultaneous Swltching Test Circuit
Switching Characteristics over recommended operating free air temperature range
DM74ALS14
Symbol Parameter Conditions (Note 1) Units
Min Max
tpLH Propagation Delay Time Vcc = 4.5V to 5.5V 2 12 ns
Low to High Level Output RL Dt-' 5000, CL = 50 pF
tPHL Propagation Delay Time 2 1 0 ns
High to Low Level Output
Note 1: See Section 1 for test waveforms and output load.
Physical Dimensions inches (millimeters)
“Ii (l
0 335 -th344
" 509-173!)
"ttr-ll. 244
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0mlr-0.0t0 . 0.053 41.000
(tMM-tMIB) “5 - (KMti-1mi3)
r MAX m 0.004 4010
ALL LEADS (0.102 -thtW
+ .0 0..
SEATING
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0.000—0.010i*:'|0050 'C]'''?' 0-014 0020
(0.2004254) I 0.0164050 tf-fl +__ (0. 358- th 500) m
11? ALL mus 0.004 (tMt16-8,2rih'tr, 0_ 000”
10.102) W At.k LEMS (0. Js'tiii"i"
ILL LIAD TIPS mum“ ..
S.0. Package (M)
Order Number DM74ALS14M
NS Package Number M14A
tl.394-tU02
(10.01 - 1021) "
I - " a , a Q Fl E
. . m__s__- 0310 12t)5-6.21'
0 -8 (7.403- 0.103) 15107-5410)
E: i T, 00000
Il.018- MM 1 2 3 ' 5 6 7
(tuo_-t).rtp 0.107)
DETAILF
0.071 REF tuwr-tum
0006-0010 (1.000) (1702-2100)
(0152-0254) l,
I N - -f
l, l _ SEATING PLANE
tum T _>l L-,te,.e,, 0050
(1245) REF (1.270) th0ul-_0.0to
0014 0020 (tuno-MM)
SEE DETAILF (W814 -
MMDIREV A)
Small Outline Package (SJ)
Order Number DM74ALS14SJ
NS Package Number M140
DM74ALS14 Hex Inverter with Schmitt Trigger Inputs
Physical Dimensions inches (millimeters) (Continued) Lit # 102536
0.7.07 11,770
---- "8lr--1gdi6) .
[WI Fil 131 Fil W m r
' -.-.-.-.-.-_
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12.337) iirmfi 782) DEPTH
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(1.13530 0115 um-nm
(1429x112 =T.'-".--= .
it u: .0 m n n 17.62it-trtN) um
-__‘- - c"-".-- WP x“ "P - P-s 1 551
(3.633 4030) 11.5241 (Imam 1 _ 1 )
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0.020 I - 90° 14'' m s (o m tTr.Wf.Citjtw 406) TYP
(3.50!) 4//
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---F "-itri'rii5i's-i) Tti' tt32S 3313
+1 016
(sas tlf/l uI-Alnun
Molded DuaI-ln-Llne Package (N)
Order Number DM74ALS14N
NS Package Number N14A
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This file is the datasheet for the following electronic components:
DM74ALS14SJ - product/dm74als14s]?HQS=T|-nulI-nulI-dscatalog-df-pf-nuII-wwe
DM74ALS14M - product/dm74als14m?HQS=T|-null-null-dscatalog-df—pf—nuII-wwe
DM74ALS14N - product/dm74als14n?HQS=T|—null-null-dscatalog—df—pf—nuII-wwe
