SN74LVCH244A-Q1 Datasheet, PDF (1/9 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

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FEATURES
• Qualification in Accordance With AEC-Q100 ⁽¹⁾
• Qualified for Automotive Applications
• Customer-Specific Configuration Control Can
Be Supported Along With Major-Change
Approval
• ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
• Operates From 2 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 6.5 ns at 3.3 V
• Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
• Supports Mixed-Mode Signal Operation on All
Ports (5-V Input/Output Voltage With
3.3-V V_CC)
• I_off Supports Partial-Power-Down Mode
Operation
• Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
(1) Contact factory for details. Q100 qualification data available
on request.
SN74LVCH244A-Q1
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES492A – SEPTEMBER 2003 – REVISED DECEMBER 2005
DW 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
DESCRIPTION/ORDERING INFORMATION
The SN74LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V V_CC operation.
This device is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, this
devices passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance
state.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in
a mixed 3.3-V/5-V system environment.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
T_A
–40°C to 125°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
SOIC – DW
Reel of 2000
SN74LVCH244AQDWRQ1
TSSOP – PW
Reel of 2000
SN74LVCH244AQPWRQ1
TOP-SIDE MARKING
LH244AQ
LH244AQ
(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 © 2003–2005, Texas Instruments Incorporated