www.ti.com
FEATURES
•
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Member of the Texas Instruments Widebus™
Family
EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
Output Ports Have Equivalent 26-Ω Series
Resistors, So No External Resistors Are
Required
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
NOTE: For tape-and-reel order entry, the DGGR package is
abbreviated to GR.
DESCRIPTION
This 20-bit bus-interface D-type latch is designed for
1.65-V to 3.6-V VCC operation.
The SN74ALVCH162841 features 3-state outputs
designed specifically for driving highly capacitive or
relatively low-impedance loads. This device is
particularly suitable for implementing buffer registers,
unidirectional bus drivers, and working registers.
The SN74ALVCH162841 can be used as two 10-bit
latches or one 20-bit latch. The 20-bit latch is a
transparent D-type latch. The device has noninverting
data (D) inputs and provides true data at its outputs.
While the latch-enable (1LE or 2LE) input is high, the
Q outputs of the corresponding 10-bit latch follow the
D inputs. When LE is taken low, the Q outputs are
latched at the levels set up at the D inputs.
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
DGG OR DL PACKAGE
(TOP VIEW)
1OE
1Q1
1Q2
GND
1Q3
1Q4
VCC
1Q5
1Q6
1Q7
GND
1Q8
1Q9
1Q10
2Q1
2Q2
2Q3
GND
2Q4
2Q5
2Q6
VCC
2Q7
2Q8
GND
2Q9
2Q10
2OE
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11
46
12
45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
31
27
30
28
29
1LE
1D1
1D2
GND
1D3
1D4
VCC
1D5
1D6
1D7
GND
1D8
1D9
1D10
2D1
2D2
2D3
GND
2D4
2D5
2D6
VCC
2D7
2D8
GND
2D9
2D10
2LE
A buffered output-enable (1OE or 2OE) input can be used to place the outputs of the corresponding 10-bit latch
in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state,
the outputs neither load nor drive the bus lines significantly.
OE does not affect the internal operation of the latches. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
The outputs, which are designed to sink up to 12 mA, include equivalent 26-Ω resistors to reduce overshoot and
undershoot.
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, EPIC are trademarks of Texas Instruments.
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 © 1996–2004, Texas Instruments Incorporated
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
DESCRIPTION (CONTINUED)
To ensure the high-impedance state during power up or power down, 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.
Active bus-hold circuitry is provided to hold unused or floating inputs at a valid logic level.
The SN74ALVCH162841 is characterized for operation from -40°C to 85°C.
FUNCTION TABLE
(each 10-bit latch)
INPUTS
OE
LE
D
OUTPUT
Q
L
H
H
H
L
H
L
L
L
L
X
Q0
H
X
X
Z
LOGIC SYMBOL(1)
1
1OE
1LE
56
28
2OE
2LE
1D1
1D2
1D3
1D4
1D5
1D6
1D7
1D8
1D9
1D10
2D1
2D2
2D3
2D4
2D5
2D6
2D7
2D8
2D9
2D10
29
55
EN2
C1
EN4
C3
1D
54
2
2
3
52
5
51
6
49
8
48
9
47
10
45
12
44
13
43
14
42
3D
4
15
41
16
40
17
38
19
37
20
36
21
34
23
33
24
31
26
30
27
1Q1
1Q2
1Q3
1Q4
1Q5
1Q6
1Q7
1Q8
1Q9
1Q10
2Q1
2Q2
2Q3
2Q4
2Q5
2Q6
2Q7
2Q8
2Q9
2Q10
(1) This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
LOGIC DIAGRAM (POSITIVE LOGIC)
1OE
1LE
1
2OE
56
2LE
C1
1D1
55
1D
2
28
29
C1
1Q1
2D1
42
To Nine Other Channels
15
1D
2Q1
To Nine Other Channels
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
VCC
Supply voltage range
-0.5
4.6
V
VI
Input voltage range (2)
-0.5
4.6
V
VO
Output voltage range (2) (3)
-0.5
VCC + 0.5
V
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 each VCC or GND
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
(1)
(2)
(3)
(4)
DGG package
81
DL package
74
-65
150
UNIT
°C/W
°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.
This value is limited to 4.6 V maximum.
The package thermal impedance is calculated in accordance with JESD 51.
3
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
RECOMMENDED OPERATING CONDITIONS (1)
VCC
Supply voltage
VCC = 1.65 V to 1.95 V
VIH
High-level input voltage
MIN
MAX
1.65
3.6
Low-level input voltage
VI
Input voltage
VO
Output voltage
IOH
High-level output current
VCC = 2.3 V to 2.7 V
1.7
VCC = 2.7 V to 3.6 V
2
Low-level output current
∆t/∆v
Input transition rise or fall rate
TA
Operating free-air temperature
VCC = 2.3 V to 2.7 V
0.7
VCC = 2.7 V to 3.6 V
0.8
4
V
0
VCC
V
0
VCC
V
VCC = 1.65 V
-2
VCC = 2.3 V
-6
VCC = 2.7 V
-8
mA
-12
VCC = 1.65 V
2
VCC = 2.3 V
6
VCC = 2.7 V
8
VCC = 3 V
(1)
V
0.35 × VCC
VCC = 3 V
IOL
V
0.65 × VCC
VCC = 1.65 V to 1.95 V
VIL
UNIT
mA
12
-40
10
ns/V
85
°C
All unused control 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.
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
IOH = -100 µA
VOH
1.65 V to 3.6 V
1.65 V
1.2
IOH = -4 mA
2.3 V
1.9
2.3 V
1.7
3V
2.4
IOH = -8 mA
2.7 V
2
IOH = -12 mA
3V
2
IOL = 100 µA
II(hold)
MAX
1.65 V to 3.6 V
0.2
1.65 V
0.45
IOL = 4 mA
2.3 V
0.4
2.3 V
0.55
3V
0.55
IOL = 8 mA
2.7 V
0.6
IOL = 12 mA
3V
0.8
V
±5
VI = VCC or GND
3.6 V
VI = 0.58 V
1.65 V
25
VI = 1.07 V
1.65 V
-25
VI = 0.7 V
2.3 V
45
VI = 1.7 V
2.3 V
-45
VI = 0.8 V
3V
75
3V
-75
VI = 2 V
UNIT
V
IOL = 2 mA
IOL = 6 mA
II
TYP (1)
VCC - 0.2
IOH = -2 mA
IOH = -6 mA
VOL
MIN
µA
µA
VI = 0 to 3.6 V (2)
3.6 V
±500
IOZ
VO = VCC or GND
3.6 V
±10
µA
ICC
VI = VCC or GND, IO = 0
3.6 V
40
µA
750
µA
∆ICC
Ci
Co
(1)
(2)
One input at VCC - 0.6 V, Other inputs at VCC or GND
Control inputs
Data inputs
Outputs
3 V to 3.6 V
VI = VCC or GND
3.3 V
VO = VCC or GND
3.3 V
4.5
pF
6.5
7
pF
All typical values are at VCC = 3.3 V, TA = 25°C.
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to
another.
TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 through Figure 3)
VCC = 1.8 V
VCC = 2.5 V
± 0.2 V
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
MIN MAX
MIN MAX
MIN MAX
MIN MAX
UNIT
tw
Pulse duration, LE high or low
(1)
3.3
3.3
3.3
ns
tsu
Setup time, data before LE↑
(1)
0.9
0.7
1.1
ns
th
Hold time, data after LE↑
(1)
1.2
1.5
1.1
ns
(1)
This information was not available at the time of publication.
5
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 through Figure 3)
PARAMETER
tpd
(1)
FROM
(INPUT)
TO
(OUTPUT)
D
Q
LE
VCC = 1.8 V
TYP
VCC = 2.5 V
VCC = 3.3 V
VCC = 2.7 V
± 0.2 V
± 0.3 V
MIN MAX
MIN MAX
UNIT
MIN MAX
(1)
1
5.3
5.2
1.2
4.3
(1)
1
5.9
5.6
1
4.7
ns
ten
OE
Q
(1)
1
6.5
6.5
1
5.3
ns
tdis
OE
Q
(1)
1.1
5.6
4.9
1.3
4.4
ns
This information was not available at the time of publication.
OPERATING CHARACTERISTICS
TA = 25°C
PARAMETER
Cpd Power dissipation capacitance
(1)
6
TEST CONDITIONS
Outputs enabled
Outputs disabled
This information was not available at the time of publication.
CL = 0, f = 10 MHz
VCC = 1.8 V
VCC = 2.5 V
VCC = 3.3 V
TYP
TYP
TYP
(1)
24
27
(1)
2
2
UNIT
pF
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VCC = 1.8 V
2 × VCC
S1
1 kΩ
From Output
Under Test
Open
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
GND
CL = 30 pF
(see Note A)
1 kΩ
S1
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)
VCC/2
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
tPLZ
VCC
VCC/2
tPZH
VOH
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 + 0.15 V
VOL
tPHZ
VCC/2
VOH
VOH − 0.15 V
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.
Figure 1. Load Circuit and Voltage Waveforms
7
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VCC = 2.5 V ± 0.2 V
2 × VCC
S1
500 Ω
From Output
Under Test
Open
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
GND
CL = 30 pF
(see Note A)
500 Ω
S1
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)
VCC/2
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
tPLZ
VCC
VCC/2
tPZH
VOH
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 + 0.15 V
VOL
tPHZ
VCC/2
VOH
VOH − 0.15 V
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.
Figure 2. Load Circuit and Voltage Waveforms
8
SN74ALVCH162841
20-BIT BUS-INTERFACE D-TYPE LATCH
WITH 3-STATE OUTPUTS
www.ti.com
SCES088E – OCTOBER 1996 – REVISED SEPTEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VCC = 2.7 V AND 3.3 V ± 0.3 V
From Output
Under Test
6V
Open
S1
500 Ω
GND
CL = 50 pF
(see Note A)
500 Ω
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
6V
GND
tw
LOAD CIRCUIT
2.7 V
2.7 V
Timing
Input
1.5 V
Input
1.5 V
1.5 V
0V
0V
tsu
VOLTAGE WAVEFORMS
PULSE DURATION
th
2.7 V
Data
Input
1.5 V
1.5 V
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
2.7 V
Output
Control
(low-level
enabling)
1.5 V
1.5 V
0V
tPLZ
tPZL
2.7 V
Input
1.5 V
1.5 V
0V
tPLH
1.5 V
1.5 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
3V
1.5 V
VOL + 0.3 V
VOL
tPZH
tPHL
VOH
Output
Output
Waveform 1
S1 at 6 V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
tPHZ
1.5 V
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: PRR10 MHz, ZO = 50 Ω, tr2.5 ns, tf2.5 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.
Figure 3. Load Circuit and Voltage Waveforms
9
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)
(3)
Device Marking
(4/5)
(6)
SN74ALVCH162841DL
ACTIVE
SSOP
DL
56
20
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALVCH162841
SN74ALVCH162841GR
ACTIVE
TSSOP
DGG
56
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALVCH162841
(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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