SN74AUC244 BUFFER/DRIVER Datasheet

SN74AUC244 Datasheet, PDF, Equivalent


Part Number

SN74AUC244

Description

OCTAL BUFFER/DRIVER

Manufacture

etcTI

Total Page 14 Pages
Datasheet
Download SN74AUC244 Datasheet


SN74AUC244
D Optimized for 1.8-V Operation and is 3.6-V
I/O Tolerant to Support Mixed-Mode Signal
Operation
D Ioff Supports Partial-Power-Down Mode
Operation
D Sub 1-V Operable
D Max tpd of 1.9 ns at 1.8 V
D Low Power Consumption, 20-µA Max ICC
D ±8-mA Output Drive at 1.8 V
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
SN74AUC244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES432 – MARCH 2003
RGY PACKAGE
(TOP VIEW)
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
1
10
20
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11
description/ordering information
This octal buffer/driver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC
operation.
The SN74AUC244 is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is
low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the
high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
–40°C to 85°C QFN – RGY
Tape and reel SN74AUC244RGYR
MS244
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
FUNCTION TABLE
(each 4-bit 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 2003, Texas Instruments Incorporated
1

SN74AUC244
SN74AUC244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES432 MARCH 2003
logic diagram (positive logic)
1OE 1
2
1A1
18 1Y1
2OE 19
11
2A1
9 2Y1
1A2 4
16 1Y2
2A2 13
7 2Y2
1A3 6
14 1Y3
2A3 15
5 2Y3
1A4 8
12 1Y4
2A4 17
3 2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 3.6 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 3.6 V
Voltage range applied to any output in the high-impedance or power-off state, VO
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 3.6 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Continuous output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θJA (see Note 2): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under absolute maximum ratingsmay 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 conditionsis not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input negative-voltage 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 51-5.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features D Optimized for 1.8-V Operation and is 3 .6-V I/O Tolerant to Support Mixed-Mode Signal Operation D Ioff Supports Parti al-Power-Down Mode Operation D Sub 1-V Operable D Max tpd of 1.9 ns at 1.8 V D Low Power Consumption, 20-µA Max ICC D ±8-mA Output Drive at 1.8 V D Latch- Up Performance Exceeds 100 mA Per JESD 78, Class II D ESD Protection Exceeds J ESD 22 – 2000-V Human-Body Model (A11 4-A) – 200-V Machine Model (A115-A) 1000-V Charged-Device Model (C101) GND 2A1 SN74AUC244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES432 – MARCH 2003 RGY PACKAGE (TOP VIEW) 1OE VCC 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 1 10 20 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 description/ordering information This octal buffer/driver is operational at 0 .8-V to 2.7-V VCC, but is designed spec ifically for 1.65-V to 1.95-V VCC opera tion. The SN74AUC244 is organized as tw o 4-bit line drivers with separate outp ut-enable (OE) inputs. When OE is low, the device passes data from the A .
Keywords SN74AUC244, datasheet, pdf, etcTI, OCTAL, BUFFER/DRIVER, N74AUC244, 74AUC244, 4AUC244, SN74AUC24, SN74AUC2, SN74AUC, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)