SN74LVCZ244A_07 Datasheet, PDF (1/16 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

D Operates From 2.7 V to 3.6 V
D Inputs Accept Voltages to 5.5 V
D Max t_pd of 5.9 ns at 3.3 V
D Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
D Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
D I_off and Power-Up 3-State Support Hot
Insertion
D Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V V_CC)
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
SN74LVCZ244A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES274H – JUNE 1999 – REVISED AUGUST 2003
DB, DW, N, 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
description/ordering information
This octal buffer/line driver is designed for 2.7-V to 3.6-V V_CC operation.
The SN74LVCZ244A 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.
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.
When V_CC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.5 V, 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.
This device is fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry
disables the outputs, preventing damaging current backflow through the device when it is powered down. The
power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube of 20
SN74LVCZ244AN
SN74LVCZ244AN
SOIC – DW
Tube of 25
Reel of 2000
SN74LVCZ244ADW
SN74LVCZ244ADWR
LVCZ244A
SOP – NS
–40°C to 85°C
SSOP – DB
Reel of 2000
Reel of 2000
SN74LVCZ244ANSR
SN74LVCZ244ADBR
LVCZ244A
CV244A
Tube of 70
SN74LVCZ244APW
TSSOP – PW Reel of 2000 SN74LVCZ244APWR
CV244A
Reel of 250
SN74LVCZ244APWT
† _{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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2003, Texas Instruments Incorporated
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