SN74HC244-EP Drivers Datasheet

SN74HC244-EP Datasheet, PDF, Equivalent


Part Number

SN74HC244-EP

Description

Octal Buffers and Line Drivers

Manufacture

etcTI

Total Page 15 Pages
Datasheet
Download SN74HC244-EP Datasheet


SN74HC244-EP
D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of Up
To −55°C to 125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D High-Current Outputs Drive Up To 15
LSTTL Loads
Component qualification in accordance with JEDEC and industry
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life.
SN74HC244ĆEP
OCTAL BUFFER AND LINE DRIVER
WITH 3ĆSTATE OUTPUTS
SCLS463A − JULY 2002 − REVISED JANUARY 2004
DW OR PW PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
description/ordering information
This octal buffer and line driver is designed specifically to improve both the performance and density of 3-state
memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74HC244 is
organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device
passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the
high-impedance state.
ORDERING INFORMATION
TA
PACKAGE‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOP − DW
−40°C to 125°C
TSSOP − PW
Tape and reel
Tape and reel
SN74HC244QDWREP
SN74HC244QPWREP
SHC244EP
SHC244EP
−55°C to 125°C SOP − DW
Tape and reel SN74HC244MDWREP
HC244MEP
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OE A
OUTPUT
Y
LH
H
LL
L
HX
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2004, Texas Instruments Incorporated
1

SN74HC244-EP
SN74HC244ĆEP
OCTAL BUFFER AND LINE DRIVER
WITH 3ĆSTATE OUTPUTS
SCLS463A − JULY 2002 − REVISED JANUARY 2004
logic diagram (positive logic)
1
1OE
19
2OE
1A1 2
1A2 4
1A3 6
1A4 8
18 1Y1
16 1Y2
14 1Y3
12 1Y4
2A1 11
2A2 13
15
2A3
2A4 17
9
2Y1
7
2Y2
5
2Y3
3
2Y4
absolute maximum ratings over operating free-air temperature range
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA
Package thermal impedance, θJA (see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
VCC Supply voltage
VIH High-level input voltage
VIL Low-level input voltage
VI Input voltage
VO Output voltage
tt Input transition (rise and fall) time
TA Operating free-air temperature
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
Q-suffix device
M-suffix device
MIN
2
1.5
3.15
4.2
0
0
0
0
0
0
0
0
−40
−55
NOM
5
MAX
6
0.5
1.35
1.8
VCC
VCC
1000
500
400
125
125
UNIT
V
V
V
V
V
ns
°C
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features D Controlled Baseline − One Assembly/T est Site, One Fabrication Site D Extend ed Temperature Performance of Up To − 55°C to 125°C D Enhanced Diminishing Manufacturing Sources (DMS) Support D E nhanced Product-Change Notification D Q ualification Pedigree† D 3-State Outp uts Drive Bus Lines or Buffer Memory Ad dress Registers D High-Current Outputs Drive Up To 15 LSTTL Loads † Componen t qualification in accordance with JEDE C and industry standards to ensure reli able operation over an extended tempera ture range. This includes, but is not l imited to, Highly Accelerated Stress Te st (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, elec tromigration, bond intermetallic life, and mold compound life. SN74HC244ĆEP OCTAL BUFFER AND LINE DRIVER WITH 3ĆST ATE OUTPUTS SCLS463A − JULY 2002 − REVISED JANUARY 2004 DW OR PW PACKAGE ( TOP VIEW) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 1 2 3 4 5 6 7 8 9 10 20 V CC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 description/.
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