www.ti.com
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
SCES038F – JULY 1995 – REVISED APRIL 2005
FEATURES
•
•
•
•
•
•
Member of the Texas Instruments Widebus™
Family
EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
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
DESCRIPTION
This 18-bit bus-interface flip-flop is designed for
1.65-V to 3.6-V VCC operation.
The SN74ALVCH16823 features 3-state outputs
designed specifically for driving highly capacitive or
relatively low-impedance loads. This device is
particularly suitable for implementing wider buffer
registers, I/O ports, bidirectional bus drivers with
parity, and working registers.
The SN74ALVCH16823 can be used as two 9-bit
flip-flops or one 18-bit flip-flop. With the clock-enable
(CLKEN) input low, the D-type flip-flops enter data on
the low-to-high transitions of the clock. Taking
CLKEN high disables the clock buffer, thus latching
the outputs. Taking the clear (CLR) input low causes
the Q outputs to go low independently of the clock.
DGG OR DL PACKAGE
(TOP VIEW)
1CLR
1OE
1Q1
GND
1Q2
1Q3
VCC
1Q4
1Q5
1Q6
GND
1Q7
1Q8
1Q9
2Q1
2Q2
2Q3
GND
2Q4
2Q5
2Q6
VCC
2Q7
2Q8
GND
2Q9
2OE
2CLR
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
1CLK
1CLKEN
1D1
GND
1D2
1D3
VCC
1D4
1D5
1D6
GND
1D7
1D8
1D9
2D1
2D2
2D3
GND
2D4
2D5
2D6
VCC
2D7
2D8
GND
2D9
2CLKEN
2CLK
A buffered output-enable (OE) input can be used to place the nine outputs 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. The high-impedance state and increased drive provide the capability to drive bus lines
without need for interface or pullup components.
The output-enable (OE) input does not affect the internal operation of the flip-flops. Old data can be retained or
new data can be entered while the outputs are in the high-impedance state.
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 data inputs at a valid logic level.
The SN74ALVCH16823 is characterized for operation from –40°C to 85°C.
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 © 1995–2005, Texas Instruments Incorporated
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
FUNCTION TABLE
(each 9-bit flip-flop)
INPUTS
OE
OUTPUT
Q
CLR
CLKEN
CLK
D
L
L
X
X
X
L
L
H
L
↑
H
H
L
H
L
↑
L
L
L
H
L
L
X
Q0
L
H
H
X
X
Q0
H
X
X
X
X
Z
LOGIC SYMBOL(1)
1OE
1CLR
2
1
55
1CLKEN
1CLK
2OE
2CLR
2CLKEN
2CLK
1D1
1D2
1D3
1D4
1D5
1D6
1D7
1D8
1D9
2D1
2D2
2D3
2D4
2D5
2D6
2D7
2D8
2D9
56
27
28
30
29
54
EN1
R2
G3
3C4
EN5
R6
G7
7C8
4D
1, 2
3
52
5
51
6
49
8
48
9
47
10
45
12
44
13
43
14
42
8D
5, 6
15
41
16
40
17
38
19
37
20
36
21
34
23
33
24
31
26
1Q1
1Q2
1Q3
1Q4
1Q5
1Q6
1Q7
1Q8
1Q9
2Q1
2Q2
2Q3
2Q4
2Q5
2Q6
2Q7
2Q8
2Q9
(1) This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
LOGIC DIAGRAM (POSITIVE LOGIC)
1OE
1CLR
1CLKEN
2
1
55
CE
R
1CLK
1D1
56
C1
54
3
1Q1
1D
To Eight Other Channels
2OE
2CLR
2CLKEN
27
28
30
CE
R
2CLK
2D1
29
C1
42
15
2Q1
1D
To Eight Other Channels
Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
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 VCC or GND
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
(1)
(2)
(3)
(4)
DGG package
81
DL package
74
–65
150
°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
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
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
UNIT
V
0.65 × VCC
VCC = 2.3 V to 2.7 V
1.7
VCC = 2.7 V to 3.6 V
2
VCC = 1.65 V to 1.95 V
V
0.35 × VCC
VIL
Low-level input voltage
VCC = 2.3 V to 2.7 V
0.7
VI
Input voltage
0
VCC
V
VO
Output voltage
0
VCC
V
VCC = 2.7 V to 3.6 V
IOH
High-level output current
IOL
Low-level output current
∆t/∆v
Input transition rise or fall rate
TA
Operating free-air temperature
(1)
4
V
0.8
VCC = 1.65 V
–4
VCC = 2.3 V
–12
VCC = 2.7 V
–12
VCC = 3 V
–24
VCC = 1.65 V
4
VCC = 2.3 V
12
VCC = 2.7 V
12
VCC = 3 V
24
–40
mA
mA
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.
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = –100 µA
VOH
1.65 V to 3.6 V
1.65 V
2.3 V
2
2.3 V
1.7
2.7 V
2.2
3V
2.4
IOH = –24 mA
3V
2
IOL = 100 µA
1.65 V to 3.6 V
0.2
IOL = 4 mA
1.65 V
0.45
IOL = 6 mA
2.3 V
0.4
2.3 V
0.7
IOL = 24 mA
II(hold)
1.65 V
25
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
VI = 2 V
3V
–75
VI = VCC or GND,
IO = 0
∆ICC
One input at VCC – 0.6 V,
Other inputs at VCC or GND
Co
(1)
(2)
Data inputs
Outputs
0.55
VI = 1.07 V
VO = VCC or GND
Control inputs
0.4
3V
VI = 0.58 V
ICC
V
2.7 V
3.6 V
IOZ
UNIT
1.2
VI = VCC or GND
VI = 0 to 3.6 V (2)
Ci
MAX
VCC –
0.2
IOH = –6 mA
IOL = 12 mA
II
MIN TYP (1)
IOH = –4 mA
IOH = –12 mA
VOL
VCC
±5
V
µA
µA
3.6 V
±500
3.6 V
±10
µA
3.6 V
40
µA
3 V to 3.6 V
750
µA
VI = VCC or GND
3.3 V
VO = VCC or GND
3.3 V
4.5
6.5
7
pF
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.
5
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 through Figure 3)
VCC = 2.5 V
± 0.2 V
VCC = 1.8 V
MIN
fclock
tw
tsu
th
(1)
MAX
Setup time
Hold time
MAX
(1)
Clock frequency
Pulse duration
MIN
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
MIN
MIN
MAX
150
150
150
CLR low
(1)
3.3
3.3
3.3
CLK high or low
(1)
3.3
3.3
3.3
CLR inactive
(1)
0.7
0.7
0.8
Data low before CLK↑
(1)
1.6
1.6
1.3
Daa high before CLK↑
(1)
1.1
1.1
1
CLKEN low before CLK↑
(1)
1.9
1.9
1.5
Data low after CLK↑
(1)
0.5
0.5
0.5
Data high after CLK↑
(1)
0.1
0.1
0.8
CLKEN low after CLK↑
(1)
0.3
0.3
0.4
UNIT
MAX
MHz
ns
ns
ns
This information was not available at the time of publication.
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 through Figure 3)
FROM
(INPUT)
PARAMETER
TO
(OUTPUT)
MIN
TYP
(1)
fmax
CLK
tpd
CLR
ten
OE
tdis
(1)
VCC = 1.8 V
OE
VCC = 2.5 V
± 0.2 V
MIN
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MAX
150
MIN
MAX
MIN
150
UNIT
MAX
150
MHz
(1)
1
5.8
5.2
1
4.5
(1)
1
5.4
5.2
1.2
4.6
Q
(1)
1
6
5.7
1
4.8
ns
Q
(1)
1.1
5.4
4.7
1.3
4.5
ns
Q
ns
This information was not available at the time of publication.
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted), VCC = 3.3 ± 0.3 V, CL = 30 pF, RL = 500 Ω
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
fmax (1)
tpd
6
MIN
MAX
250
CLK
CLR
Q
UNIT
MHz
1
3.5
1.2
4.1
ns
ten
OE
Q
1
3.8
ns
tdis
OE
Q
1.3
4.5
ns
0.5
ns
tsk(o) (1)
(1)
VCC = 3.3 V ± 0.3 V
Values are characterized but not production tested.
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
Operating Characteristics
TA = 25°C
PARAMETER
Cpd
(1)
Power dissipation
capacitance
Outputs enabled
Outputs disabled
TEST
CONDITIONS
CL = 50 pF, f = 10 MHz
VCC = 1.8 V
VCC = 2.5 V
VCC = 3.3 V
TYP
TYP
TYP
(1)
27
30
(1)
16
18
UNIT
pF
This information was not available at the time of publication.
7
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
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
8
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
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
9
SN74ALVCH16823
18-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
www.ti.com
SCES038F – JULY 1995 – REVISED APRIL 2005
PARAMETER MEASUREMENT INFORMATION
VCC = 2.7 V AND 3.3 V ± 0.3 V
S1
500 Ω
From Output
Under Test
6V
Open
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
Output
Control
(low-level
enabling)
2.7 V
1.5 V
0V
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
tPLZ
3V
1.5 V
VOL + 0.3 V
VOL
tPHZ
tPZH
VOH
Output
Output
Waveform 1
S1 at 6 V
(see Note B)
tPHL
1.5 V
Output
Waveform 2
S1 at GND
(see Note B)
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: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 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
10
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)
SN74ALVCH16823DGGR
ACTIVE
TSSOP
DGG
56
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALVCH16823
SN74ALVCH16823DGVR
ACTIVE
TVSOP
DGV
56
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
VH823
SN74ALVCH16823DL
ACTIVE
SSOP
DL
56
20
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALVCH16823
SN74ALVCH16823DLR
ACTIVE
SSOP
DL
56
1000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALVCH16823
(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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