SN74LVCZ240A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
SCES273H – JUNE 1999 – REVISED APRIL 2005
FEATURES
•
•
•
•
•
•
•
•
•
DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
Operates From 2.7 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 6.5 ns at 3.3 V
Typical VOLP (Output Ground Bounce)
< 0.8 V at VCC = 3.3 V, TA = 25°C
Typical VOHV (Output VOH Undershoot)
> 2 V at VCC = 3.3 V, TA = 25°C
Ioff and Power-Up 3-State Support Hot
Insertion
Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V VCC)
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
DESCRIPTION/ORDERING INFORMATION
This octal buffer/driver is designed for 2.7-V to 3.6-V VCC operation.
The SN74LVCZ240A is designed specifically to improve the performance and density of 3-state memory address
drivers, clock drivers, and bus-oriented receivers and transmitters.
This device is organized as two 4-bit buffers/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.
ORDERING INFORMATION
PACKAGE (1)
TA
PDIP – N
SN74LVCZ240AN
Tube of 25
SN74LVCZ240ADW
Reel of 2000
SN74LVCZ240ADWR
SOP – NS
Reel of 2000
SN74LVCZ240ANSR
LVCZ240A
SSOP – DB
Reel of 2000
SN74LVCZ240ADBR
CV240A
Tube of 70
SN74LVCZ240APW
Reel of 2000
SN74LVCZ240APWR
Reel of 250
SN74LVCZ240APWT
Reel of 2000
SN74LVCZ240ADGVR
TSSOP – PW
TVSOP – DGV
(1)
TOP-SIDE MARKING
Tube of 20
SOIC – DW
–40°C to 85°C
ORDERABLE PART NUMBER
SN74LVCZ240AN
LVCZ240A
CV240A
CV240A
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 © 1999–2005, Texas Instruments Incorporated
SN74LVCZ240A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
SCES273H – JUNE 1999 – REVISED APRIL 2005
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
When VCC 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 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 hot-insertion applications using Ioff and power-up 3-state. The Ioff 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.
FUNCTION TABLE
(EACH BUFFER)
INPUTS
OUTPUT
Y
OE
A
L
H
L
L
L
H
H
X
Z
LOGIC DIAGRAM (POSITIVE LOGIC)
1OE
1A1
1A2
1
2
18
4
16
6
14
8
12
1A3
1A4
2OE
2A1
2A4
2
1Y2
1Y3
1Y4
19
11
9
13
7
15
5
17
3
2A2
2A3
1Y1
2Y1
2Y2
2Y3
2Y4
SN74LVCZ240A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
Absolute Maximum Ratings
SCES273H – JUNE 1999 – REVISED APRIL 2005
(1)
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
VCC
Supply voltage range
–0.5
6.5
V
VI
Input voltage range (2)
–0.5
6.5
V
–0.5
6.5
V
–0.5
VCC + 0.5
state (2)
UNIT
VO
Voltage range applied to any output in the high-impedance or power-off
VO
Voltage range applied to any output in the high or low state (2) (3)
IIK
Input clamp current
VI < 0
–50
mA
IOK
Output clamp current
VO < 0
–50
mA
IO
Continuous output current
±50
mA
±100
mA
Continuous current through VCC or GND
θJA
Package thermal impedance (4)
DB package
70
DGV package
92
DW package
58
N package
69
NS package
60
PW package
Tstg
(1)
(2)
(3)
(4)
V
°C/W
83
Storage temperature range
–65
150°C
°C
Stresses beyond those listed under "absolute maximum ratings" may 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
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
The value of VCC is provided in the recommended operating conditions table.
The package thermal impedance is calculated in accordance with JESD 51-7.
Recommended Operating Conditions (1)
VCC
Supply voltage
VIH
High-level input voltage
VCC = 2.7 V to 3.6 V
VIL
Low-level input voltage
VCC = 2.7 V to 3.6 V
VI
Input voltage
MIN
MAX
2.7
3.6
2
V
V
5.5
0
VCC
3-state
0
5.5
IOH
High-level output current
IOL
Low-level output current
∆t/∆v
Input transition rise or fall rate
∆t/∆VCC
Power-up ramp rate
150
TA
Operating free-air temperature
–40
(1)
V
0
Output voltage
V
0.8
High or low state
VO
UNIT
VCC = 2.7 V
–12
VCC = 3 V
–24
VCC = 2.7 V
12
VCC = 3 V
24
6
V
mA
mA
ns/V
µs/V
85
°C
All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
3
SN74LVCZ240A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
SCES273H – JUNE 1999 – REVISED APRIL 2005
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = –100 µA
VOH
II
UNIT
VCC – 0.2
2.7 V
2.2
3V
2.4
IOH = –24 mA
3V
2.2
IOL = 100 µA
2.7 V to 3.6 V
IOL = 12 mA
2.7 V
0.4
IOL = 24 mA
3V
0.55
VI = 0 to 5.5 V
V
0.2
V
3.6 V
±5
µA
Ioff
VI or VO = 5.5 V
0
±5
µA
IOZ
VO = 0 to 5.5 V
3.6 V
±5
µA
IOZPU
VO = 0.5 to 2.5 V,
OE = don't care
0 to 1.5 V
±5
µA
IOZPD
VO = 0.5 to 2.5 V,
OE = don't care
1.5 V to 0
±5
µA
VI = VCC or GND
ICC
3.6 V ≤ VI ≤ 5.5 V (2)
∆ICC
(1)
(2)
2.7 V to 3.6 V
IOH = –12 mA
VOL
MIN TYP (1) MAX
VCC
IO = 0
One input at VCC – 0.6 V, Other inputs at VCC or GND
100
3.6 V
µA
100
2.7 V to 3.6 V
µA
100
Ci
VI = VCC or GND
3.3 V
3.5
pF
Co
VO = VCC or GND
3.3 V
5.5
pF
All typical values are at VCC = 3.3 V, TA = 25°C.
This applies in the disabled state only.
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
(OUTPUT)
tpd
A or B
ten
OE
tdis
OE
PARAMETER
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MIN
UNIT
MAX
MIN
MAX
B or A
7.5
1.3
6.5
ns
A or B
9
1.1
8
ns
A or B
8
1.4
7
ns
Operating Characteristics
TA = 25°C
TEST
CONDITIONS
PARAMETER
Cpd
4
Power dissipation capacitance per buffer/driver
Outputs enabled
Outputs disabled
f = 10 MHz
VCC = 3.3 V
TYP
37
3
UNIT
pF
SN74LVCZ240A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
SCES273H – JUNE 1999 – REVISED APRIL 2005
PARAMETER MEASUREMENT INFORMATION
VCC = 2.7 V and 3.3 V ± 0.3 V
2 × VCC
S1
500 Ω
From Output
Under Test
GND
CL = 30 pF
(see Note A)
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
2 × VCC
GND
Open
500 Ω
tw
LOAD CIRCUIT
VCC
VCC
Timing
Input
Input
VCC/2
VCC/2
0V
VCC/2
0V
tsu
VOLTAGE WAVEFORMS
PULSE DURATION
th
VCC
Data
Input
VCC/2
VCC/2
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC
Output
Control
(low-level
enabling)
VCC/2
VCC/2
0V
tPZL
VCC
Input
VCC/2
VCC/2
0V
tPLH
tPHL
VCC/2
VCC/2
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VCC
VCC/2
VOL + 0.3 V
VOL
tPZH
VOH
Output
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPLZ
Output
Waveform 2
S1 at GND
(see Note B)
tPHZ
VCC/2
VOH − 0.3 V
VOH
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
5
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
SN74LVCZ240ADW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVCZ240A
Samples
SN74LVCZ240ANSR
ACTIVE
SO
NS
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVCZ240A
Samples
SN74LVCZ240APW
ACTIVE
TSSOP
PW
20
70
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CV240A
Samples
SN74LVCZ240APWR
ACTIVE
TSSOP
PW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CV240A
Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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