DM74S244N ,Octal 3-STATE Buffer/Line Driver/Line ReceiverGeneral Description
These buffers/Iine drivers are designed to improve both the I Typical kx (si ..
DM74S244N ,Octal 3-STATE Buffer/Line Driver/Line ReceiverDM74S240 • DM74S241 DM74S244 Octal 3-STATE Buffer/Line Driver/Line ReceiverAugust 1986Revised May ..
DM74S251N ,7 V, TRI-STATE 1 of 8 line data selector/multiplexerFeatures
I TRI-STATE version of S151
I Interface directly with system bus
I Perform parall ..
DM74S253N ,Dual 3-STATE 1-of-4 Line Data Selector/MultiplexerFeatures
I THI-STATE version of $153 with same pin-out
I Schottky-diode-clamped transistors
I Pe ..
DM74S257N ,3-STATE Quad 1-of-2 Data Selector/MultiplexerFeatures
These Schottky-clamped high-performance multiplexers I TRl-STATE versions S157, S158, w ..
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DS2502AX-500-00/T&R ,1Kb Add-Only Memoryapplications include storage of calibration constants, maintenance records, asset tracking,product ..
DS2502AX-500-00/T&R/ ,1Kb Add-Only Memoryblock diagram in Figure 1 shows the relationships between the major control and memory sections oft ..
DS2502-E48 ,48-Bit Node Address Chip19-5071; 12/09 DS2502-E48 48-Bit Node Address Chip
DS2502-E64 ,IEEE EUI-64 Node Address Chip19-5072; 12/09 DS2502-E64IEEE EUI-64 Node Address Chip
DS2502-E64+ ,IEEE EUI-64 Node Address Chip19-5072; 12/09 DS2502-E64IEEE EUI-64 Node Address Chip
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DM74S244N
7 V, octal TRI-STATE buffer/line driver/line receiver
$240 0 $241 ° $244
National _
I Semiconductor
DM54S240/DM74S240, DM54S241/DM74S241,
DM54S244/DM74S244 Octal TRl-STATE®
Buffers/Line Drivers/Line Receivers
General Description
These buffers/line drivers are designed to improve both the
performance and PC board density of TRI-STATE butters/
drivers employed as memory-address drivers, clock drivers,
and bus-oriented transmitters/rtmeivers. Featuring 400 mV
of hysteresis at each low current PNP data line input, they
provide improved noise rejection and high fanout outputs,
and can be used to drive terminated lines down to 1330.
Features
I: TRI-STATE outputs drive bus lines directly
I: PNP inputs reduce DC loading on bus lines
I: Hysteresis at data inputs improves noise margins
l: Typical IOL (sink current)
548 48 mA
74S 64 mA
a Typical loH (source current)
548 -12 mA
748 -15 mA
" Typical propagation delay times
Invening 4.5 ns
Noninvtsrting 6 ns
" Typical enable/disable times 9 ns
a Typical power dissipation (enabled)
Inverting 450 mW
Noninverting 538 mW
Connection Diagrams
Dual-In-Llne Package
Vcc " 1" us "2 an w: 2n '" an
leo I19 " " w " " " u 11
(7/?(//
[Iza4sovaol1o
16 tAt 2n 1A2 av: tM 2T2 IM an em
TLlF/6478-1
Order Number DM54SMN,
DM74524OWM or DM745240N
See NS Package Number
J20A, M208 or N20A
DuaI-ln-Llne Package
“CC " tt't 2A4 "2 n3 ty3 2A2 w; 2A1
J20 In " " " " " " " n
'''r'//'p)dy/
Chl,/lyi,14 a
I, 2 a 4 s e , a a Ito
16 m 2Y4 u: 2r3 1A3 '" IM an em
TL/F/6478-2
Order Number DM545241J
or DM74S241N
See NS Package Number
J20A or N20A
DuaI-In-Llne Package
VCC fd
I20 Its: " n "
tft 2A6 IV2 2A3 183 2A2 1V. 2A1
" " " " tt
I 2 3 I 5
ttT 1A1 an tA2 av: 1A3 2Y2
tsrtssslto
1A4 "t GND
TL/F/647B-3
Order Number DM548244J,
DM74S244WM or DM745244N
Sea NS Package Number
J20A, M208 or N20A
Absolute Maximum Ratings (Note)
It MllttaryfAerospamt spoclflod devices are requlred,
please contact the National Semiconductor Salas
ttfflttttfDlBtrittutortt for availability and trpeMtWratlortts.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range
DM54S - 55''C to + 125°C
DM74S IPC to + 7ty'C
Storage Temperature Range - 65''C to + 150°C
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 Chatattttaristitts''
table are not guaranteed at the absolute maximum ratings.
The "Recommended Operating Conditions " table will define
the conditions for actual device operation.
Symbol Parameter DM54S Duns Units
Mln Typ Mln Typ Max
VCC Supply Voltage 4.5 5 5.5 4.75 5 5.5 V
VIH High Level Input Voltage 2 2 V
" Low Level Input Voltage 0.8 0.8 V
IOH High Level Output Current - 12 - 15 mA
IOL Low Level Output Current 48 64 mA
TA Free Air Operating Temperature - 55 125 0 70 "C
Electrical Characteristics over recommended operating lree-air temperature range (unless otherwise noted)
7733 0 W33 0 01733
Symbol Pttrttttttttttr Conditions Mln Typ Max Unite
(Note 1)
V. Input Clamp Voltage Vcc = Min, h = - 18 mA - 1.2 V
H Hysteresis (V-r+ _ VT-) Vcc = Min
(Data Inputs Only) th2 0.4 V
VOH High Level OutputVoltage Vcc = 4.75V,1hH = 2V
" = 0.8V, km = -I mA DM74 2.7
Vcc = Min, Vm = 2V
1/tt. = 0.8V, km = -3 mA 2.4 3.4 V
Vcc = Min, V.“ = 2V 2
Vit. = 0.5V, lore = Max
VOL Low Level Output Voltage Vcc = Min IOL == Max DM54 0.55
V = 0 8V V = 2V V
IL ' ' IH DM74 0.55
IOZH Off-State Output Current, Voc = Max V0 = 2.4V 50 A
High Level Voltage Applied W. = o.ev "
km. Off-State Output Current, " = 2V vo = 0.5V _ 50 A
Low Level Voltage Appiied . "
h input Current at Maximum Vcc = Max V. = 5.5V 1 m A
Input Voltage
IIH High Level Input Current Vcc = Max V. ' 2.7V 50 FA
lit. Low Level InputCurrent Voc = Max V1 = 0.5V AnyA -400 ps/l
Any G - 2 mA
$240 9 $241 0 $244
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (Continued)
Symbol Parameter Condltlons Min Typ Max Unlta
(Note 1)
105 Short Circuit Output Current Vcc = Max (Note 2) -50 - 225 mA
LCC Supply Outputs DM54S240 80 123
Current High DM74S240 so 135
DM54S241, 244 95 147
DM748241, 244 95 160
Outputs DM54S240 100 145
Low DM74S240 100 150 mA
DM 548241. 244 120 170
DM74S241, 244 120 180
Outputs DM 548240 100 145
Disabled DM748240 100 150
DM54S241, 244 120 170
DM74S241, 244 120 180
Note 1: M typical values are at Vcc = w, TA .. 25''C.
Note 2: Not more then one output should be shorted at a time and duration should not exceed one second.
Switching Characteristics Vcc = 5V, TA = 25°C (See Section 1 IorTestWaveforms and Output Load)
Symbol Parameter Cttndltlttrttt Mln Max Unlts
tpLH Propagation Delay Time CL = 45 pF DM54/74S240 2 7 ns
Low to High Level Output RL = 900 DM5 4 /7 482 41 244 2 9
tPHL Propagation Delay Time CL = 45 pF DM54/74824O 2 ns
High to Low Level Output Rt. = 90tt DM54/74S241, 244 2
tPZL Output Enable Time to CL = 45 pF DM54/748240 3 15
Low Level R = 90tt ns
L DM54/74S241 ' 244 a 15
tPZH Output Enable Time to CL = 45 pF DM54/74S240 2 10
Hi h Level R = 90ft ns
g L DM54/74S241, 244 a 12
tpLz Output Disable Time CL = 5 pF DM54/74S240 4 15
from Low Level RL = gon DM54/74S241, 244 2 15
ttee Output Disable Time CL = 5 pF DM54/74S240 2 9
from High Level RL = 90ft DM54/74S241, 244 2 9
tpLH Propagation Delay Time CL = 150 pF DM54/74S240 3 10 ns
Low to High Level Output RL = 900 DM54/74S241 244 4 12
1pm, Propagation Delay Time CL = 150 pF DM54/74S240 3 10 ns
High to Low Level Output RL = 90ft DM54/748241 244 4 "
LPZL Output Enable Time to CL = 150 pF DM54/74S240 e 21
L w Level . R = son ns
o L DM54/74S241, 244 e 21
1pm Output Enable Time to CL = 150 pF DM54/74S240 4 12
Hi h Level R = son ns
9 L DM54/74S241, 244 4 15
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
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This file is the datasheet for the following electronic components:
DM54S244J - product/dm545244j?HQS=T|-nu|I-nulI-dscatalog-df-pf-nuII-wwe
DM54S241J - product/dm545241j?HQS=T|-nulI-nulI-dscatalog-df—pf—nuII-wwe
DM74S244WM - product/dm745244wm?HQS=T|-nu|I-nulI-dscatalog-df-pf-null-wwe
DM74S240WM - product/dm743240wm?HQS=T|-nu|I-nulI-dscatalog-df—pf—nuIl-wwe
DM74S241 N - product/dm745241n?HQS=T|-null-nulI-dscatalog-df-pf-null-wwe
DM74S244N - product/dm743244n?HQS=T|-nu|I-nulI-dscatalog-df-pf-nuIl-wwe
DM74S240N - product/dm743240n?HQS=T|-nulI-nulI-dscatalog-df-pf-nuIl-wwe
DM54S240J - product/dm543240j?HQS=T|-nu|I-nulI—dscatalog-df—pf—nuII-wwe
