SN74LVCZ16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES277D – JUNE 1999 – REVISED SEPTEMBER 2002
D
D
D
D
D
D
D
D
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
Operates From 2.7 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 4.1 ns at 3.3 V
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)
– 1000-V Charged-Device Model (C101)
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
description/ordering information
This 16-bit buffer/driver is designed for 2.7-V to
3.6-V VCC operation.
The SN74LVCZ16244A is designed specifically to
improve the performance and density of 3-state
memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two
8-bit buffers, or one 16-bit buffer. It provides true
outputs.
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
2OE
1A1
1A2
GND
1A3
1A4
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
During power up or power down when VCC is between 0 and 1.5 V, the device is in the high-impedance state.
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.
ORDERING INFORMATION
PACKAGE†
ORDERABLE
PART NUMBER
Tube
SN74LVCZ16244ADL
Tape and reel
SN74LVCZ16244ADLR
TSSOP – DGG
Tape and reel
SN74LVCZ16244ADGGR
LVCZ16244A
TVSOP – DGV
Tape and reel
SN74LVCZ16244ADGVR
CW244A
TA
SSOP – DL
–40°C
40°C to 85°C
TOP-SIDE
MARKING
LVCZ16244A
† 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.
Widebus is a trademark of Texas Instruments.
Copyright 2002, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN74LVCZ16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES277D – JUNE 1999 – REVISED SEPTEMBER 2002
description/ordering information (continued)
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
(VCC = 0 V). 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 4-bit buffer)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
logic diagram (positive logic)
1OE
1A1
1A2
1A3
1A4
2OE
2A1
2A2
2A3
2A4
2
1
3OE
47
2
46
3
44
5
43
6
1Y1
3A1
1Y2
3A2
1Y3
3A3
1Y4
3A4
48
4OE
41
8
40
9
38
11
37
12
2Y1
4A1
2Y2
4A2
2Y3
4A3
2Y4
4A4
POST OFFICE BOX 655303
25
36
13
35
14
33
16
32
17
3Y1
3Y2
3Y3
3Y4
24
30
19
29
20
27
22
26
23
• DALLAS, TEXAS 75265
4Y1
4Y2
4Y3
4Y4
SN74LVCZ16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES277D – JUNE 1999 – REVISED SEPTEMBER 2002
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
Voltage range applied to any output in the high-impedance or power-off state, VO
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
Voltage range applied to any output in the high or low state, VO
(see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Continuous output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through each VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θJA (see Note 3): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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.
NOTES: 1. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The value of VCC is provided in the recommended operating conditions table.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 4)
MIN
MAX
2.7
3.6
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
VO
Output voltage
IOH
High level output current
High-level
VCC = 2.7 V
VCC = 3 V
–12
IOL
Low level output current
Low-level
VCC = 2.7 V
VCC = 3 V
12
∆t/∆v
Input transition rise or fall rate
∆t/∆VCC
TA
Power-up ramp rate
150
Operating free-air temperature
–40
High-level input voltage
VCC = 2.7 V to 3.6 V
VCC = 2.7 V to 3.6 V
2
UNIT
V
V
0.8
V
0
5.5
V
High or low state
0
3-state
0
VCC
5.5
V
Input voltage
–24
24
10
mA
mA
ns/V
µs/V
85
°C
NOTE 4: 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SN74LVCZ16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES277D – JUNE 1999 – REVISED SEPTEMBER 2002
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
2.7 V to 3.6 V
IOH = –100 µA
VOH
2.7 V
IOH = –12
12 mA
IOH = –24 mA
IOL = 100 µA
MIN
TYP†
MAX
VCC–0.2
2.2
3V
2.4
3V
2.2
UNIT
V
2.7 V to 3.6 V
0.2
VOL
IOL = 12 mA
IOL = 24 mA
2.7 V
0.4
3V
0.55
II
Ioff
VI = 0 to 5.5 V
VI or VO = 5.5 V
3.6 V
±5
µA
0
±5
µA
IOZ
VO = 0 to 5.5 V
3.6 V
±5
µA
IOZPU
VO = 0.5 V to 2.5 V,
OE = don’t care
0 to 1.5 V
±5
µA
IOZPD
VO = 0.5 V to 2.5 V,
OE = don’t care
1.5 V to 0
±5
µA
ICC
VI = VCC or GND
3.6 V ≤ VI ≤ 5.5 V‡
IO = 0
∆ICC
Ci
One input at VCC – 0.6 V, Other inputs at VCC or GND
100
2.7 V to 3.6 V
VI = VCC or GND
VO = VCC or GND
Co
100
36V
3.6
100
V
µA
µA
3.3 V
4.5
pF
3.3 V
6
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, CL = 50 pF
(unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
(OUTPUT)
tpd
A
ten
tdis
PARAMETER
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
UNIT
MIN
MAX
MIN
MAX
Y
1.1
4.4
1.1
4.1
ns
OE
Y
1
4.9
1
4.6
ns
OE
Y
1.8
6.1
1.8
5.8
ns
switching characteristics over recommended operating free-air temperature range, CL = 30 pF
(unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
(OUTPUT)
tpd
A
Y
ten
OE
tdis
OE
PARAMETER
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
UNIT
MIN
MAX
MIN
MAX
1
4.3
1
4
ns
Y
1
4.7
1
4.4
ns
Y
1.7
5.6
1.7
5.3
ns
operating characteristics, TA = 25°C
TEST
CONDITIONS
PARAMETER
Cpd
4
Outputs enabled
Power dissipation capacitance per buffer/driver
POST OFFICE BOX 655303
Outputs disabled
• DALLAS, TEXAS 75265
VCC = 3.3 V
TYP
UNIT
32
f = 10 MHz
5.5
pF
SN74LVCZ16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES277D – JUNE 1999 – REVISED SEPTEMBER 2002
PARAMETER MEASUREMENT INFORMATION
VCC = 2.7 V AND 3.3 V ± 0.3 V
2 × VCC
S1
500 Ω
From Output
Under Test
Open
GND
CL = 30 pF or 50 pF
(see Note A)
500 Ω
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
2 × VCC
GND
LOAD CIRCUIT
tw
VCC
Timing
Input
VCC/2
VCC/2
VCC/2
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC/2
VCC/2
0V
tPLH
Output
Control
(low-level
enabling)
tPLZ
VCC
VCC/2
tPZH
VOH
VCC/2
VOL
VCC/2
0V
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPHL
VCC/2
VCC
VCC/2
tPZL
VCC
Input
VOLTAGE WAVEFORMS
PULSE DURATION
th
VCC
Data
Input
VCC/2
0V
0V
tsu
Output
VCC
VCC/2
Input
Output
Waveform 2
S1 at GND
(see Note B)
VOL + 0.3 V
VOL
tPHZ
VCC/2
VOH
VOH – 0.3 V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY 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
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
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)
(4/5)
(6)
SN74LVCZ16244ADGGR
ACTIVE
TSSOP
DGG
48
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVCZ16244A
SN74LVCZ16244ADGVR
ACTIVE
TVSOP
DGV
48
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CW244A
SN74LVCZ16244ADLR
ACTIVE
SSOP
DL
48
1000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVCZ16244A
(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