Octal Buffers/Drivers - Texas Instruments
Description
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FEATURES
• Inputs Are TTL-Voltage Compatible • 4.
5-V to 5.
5-V VCC Operation • Typical tpd = 5.
4 ns at 5 V • Typical VOLP (Output Ground Bounce)
<0.
8 V at VCC = 5 V, TA = 25°C • Typical VOHV (Output VOH Undershoot)
>2.
3 V at VCC = 5 V, TA = 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 VCC 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
• Ioff 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)
1OE VCC
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
GND 2A1
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.
TA –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 PC...
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