SN74LV244AT Datasheet, PDF (1/17 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

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FEATURES
• Inputs Are TTL-Voltage Compatible
• 4.5-V to 5.5-V V_CC Operation
• Typical t_pd = 5.4 ns at 5 V
• Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 5 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
>2.3 V at V_CC = 5 V, T_A = 25°C
• Supports Mixed-Mode Voltage Operation on
All Ports
DB, DGV, DW, NS, OR PW PACKAGE
(TOP VIEW)
1OE 1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 ⁹
GND ¹⁰
20 V_CC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
SN74LV244AT
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES572C – JUNE 2004 – REVISED AUGUST 2005
• I_off Supports Partial-Power-Down Mode
Operation
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
RGY PACKAGE
(TOP VIEW)
1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
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 designed specifically to improve both the performance and density of 3-state
memory-address drivers, clock drivers, and bus-oriented receivers and transmitters.
The SN74LV244AT is organized as two 4-bit buffers/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.
T_A
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
QFN – RGY
Reel of 1000
SN74LV244ATRGYR
SOIC – DW
Tube of 25
Reel of 2000
SN74LV244ATDW
SN74LV244ATDWR
SOP – NS
Reel of 2000
SN74LV244ATNSR
SSOP – DB
Reel of 2000
SN74LV244ATDBR
Tube of 70
SN74LV244ATPW
TSSOP – PW
Reel of 2000
SN74LV244ATPWR
Reel of 250
SN74LV244ATPWT
TVSOP – DGV
Reel of 2000
SN74LV244ATDGVR
TOP-SIDE MARKING
VV244
LV244AT
74LV244AT
LV244AT
LV244AT
LV244AT
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated