IDT74LVC16823A
3.3V CMOS 18-BIT REGISTER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS
18-BIT REGISTER
WITH 3-STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
FEATURES:
• Typical t
SK(o)
(Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• V
CC
= 3.3V ± 0.3V, Normal Range
• V
CC
= 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4μ W typ. static)
μ
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in SSOP and TSSOP packages
IDT74LVC16823A
DESCRIPTION:
The LVC16823A 18-bit register is built using advanced dual metal CMOS
technology. This high-speed, low-power register is ideal for use as a buffer
register for data synchronization and storage. The Output Enable (OE) and
clock (CLK) controls are organized to operate each device as two 9-bit
registers or one 18-bit register with common clock. Flow-through organi-
zation of signal pins simplifies layout. All inputs are designed with hysteresis
for improved noise margin.
All pins of the LVC16823A can be driven from either 3.3V or 5V devices.
This feature allows the use of this device as a translator in a mixed 3.3V/
5V supply system.
The LVC16823A has been designed with a
±
24mA output driver. The
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1
OE
1
CLR
1
CLK
1
CLKEN
2
1
56
55
2
OE
2
CLR
2
CLK
2
CLKEN
27
28
29
30
R
R
R
3
R
C
C
D
D
1
D
1
54
C
C
1
Q
1
2
D
1
42
D
D
15
2
Q
1
TO EIGHT OTHER CHANNELS
TO EIGHT OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2006 Integrated Device Technology, Inc.
February 20, 2009
DSC-4573/6
IDT74LVC16823A
3.3V CMOS 18-BIT REGISTER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1
CLR
1
OE
1
Q
1
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
Description
Terminal Voltage with Respect to GND
Storage Temperature
DC Output Current
Continuous Clamp Current,
V
I
< 0 or V
O
< 0
Continuous Current through each
V
CC
or GND
Max
–0.5 to +6.5
–65 to +150
–50 to +50
–50
±100
Unit
V
°C
mA
mA
mA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1
CLK
1
CLKEN
1
D
1
T
STG
I
OUT
I
IK
I
OK
I
CC
I
SS
GND
1
Q
2
1
Q
3
GND
1
D
2
1
D
3
V
CC
1
Q
4
1
Q
5
1
Q
6
V
CC
1
D
4
1
D
5
1
D
6
NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
CAPACITANCE
(T
A
= +25°C, F = 1.0MHz)
Symbol
C
IN
C
OUT
C
I/O
Parameter
(1)
Input Capacitance
Output Capacitance
I/O Port Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
V
IN
= 0V
Typ.
4.5
6.5
6.5
Max.
6
8
8
Unit
pF
pF
pF
GND
1
Q
7
1
Q
8
1
Q
9
2
Q
1
2
Q
2
2
Q
3
GND
1
D
7
1
D
8
1
D
9
2
D
1
2
D
2
2
D
3
NOTE:
1. As applicable to the device type.
PIN DESCRIPTION
Pin Names
xDx
xCLK
xCLKEN
xCLR
xOE
xQx
Data Inputs
Clock Inputs
Clock Enable Inputs (Active LOW)
Asynchronous Clear Inputs (Active LOW)
Output Enable Input (Active LOW)
3-State Outputs
Description
GND
2
Q
4
2
Q
5
2
Q
6
GND
2
D
4
2
D
5
2
D
6
V
CC
2
Q
7
2
Q
8
V
CC
2
D
7
2
D
8
FUNCTION TABLE
(1)
Inputs
xOE
H
L
L
H
H
L
L
xCLR
X
L
H
H
H
H
H
xCLKEN
X
X
H
L
L
L
L
xCLK
X
X
X
↑
↑
↑
↑
xDx
X
X
X
L
H
L
H
Outputs
xQx
Z
L
Q
(2)
GND
2
Q
9
2
OE
2
CLR
GND
2
D
9
2
CLKEN
2
CLK
Function
High Z
Clear
Hold
Load
Z
Z
L
H
SSOP/ TSSOP
TOP VIEW
NOTES:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
↑
= LOW-to-HIGH transition
2. Output level before indicated steady-state input conditions were established.
2
IDT74LVC16823A
3.3V CMOS 18-BIT REGISTER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: T
A
= –40°C to +85°C
Symbol
V
IH
Parameter
Input HIGH Voltage Level
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
IL
I
IH
I
IL
I
OZH
I
OZL
I
OFF
V
IK
V
H
I
CCL
I
CCH
I
CCZ
ΔI
CC
High Impedance Output Current
(3-State Output pins)
Input/Output Power Off Leakage
Clamp Diode Voltage
Input Hysteresis
Quiescent Power Supply Current
V
CC
= 0V, V
IN
or V
O
≤
5.5V
V
CC
= 2.3V, I
IN
= –18mA
V
CC
= 3.3V
V
CC
= 3.6V
V
IN
= GND or V
CC
—
—
—
—
—
—
—
–0.7
100
—
—
—
±50
–1.2
—
10
10
500
µA
V
mV
µA
V
CC
= 3.6V
V
O
= 0 to 5.5V
—
—
±10
µA
Input LOW Voltage Level
Input Leakage Current
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 3.6V
V
I
= 0 to 5.5V
Test Conditions
Min.
1.7
2
—
—
—
Typ.
(1)
—
—
—
—
—
Max.
—
—
0.7
0.8
±5
µA
V
Unit
V
Quiescent Power Supply Current
Variation
3.6
≤
V
IN
≤
5.5V
(2)
One input at V
CC
- 0.6V, other inputs at V
CC
or GND
µA
NOTES:
1. Typical values are at V
CC
= 3.3V, +25°C ambient.
2. This applies in the disabled state only.
OUTPUT DRIVE CHARACTERISTICS
Symbol
V
OH
Parameter
Output HIGH Voltage
V
CC
= 2.3V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3V
V
CC
= 3V
V
OL
Output LOW Voltage
V
CC
= 2.3V to 3.6V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3V
I
OH
= – 24mA
I
OL
= 0.1mA
I
OL
= 6mA
I
OL
= 12mA
I
OL
= 12mA
I
OL
= 24mA
Test Conditions
(1)
V
CC
= 2.3V to 3.6V
I
OH
= – 0.1mA
I
OH
= – 6mA
I
OH
= – 12mA
Min.
V
CC
– 0.2
2
1.7
2.2
2.4
2.2
—
—
—
—
—
Max.
—
—
—
—
—
—
0.2
0.4
0.7
0.4
0.55
V
Unit
V
NOTE:
1. V
IH
and V
IL
must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate V
CC
range.
T
A
= – 40°C to + 85°C.
3
IDT74LVC16823A
3.3V CMOS 18-BIT REGISTER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, V
CC
= 3.3V ± 0.3V, T
A
= 25°C
Symbol
C
PD
C
PD
Parameter
Power Dissipation Capacitance per Flip-Flop Outputs enabled
Power Dissipation Capacitance per Flip-Flop Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
39
6
Unit
pF
SWITCHING CHARACTERISTICS
(1)
V
CC
= 2.7V
Symbol
f
MAX
t
PLH
t
PHL
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SU
t
REM
t
H
t
SU
t
H
t
W
t
W
t
SK
(o)
Parameter
Propagation Delay
xCLK to xQx
Propagation Delay
xCLR to xQx
Output Enable Time
xOE to xQx
Output Disable Time
xOE to xQx
Set-up Time HIGH or LOW, xDx before xCLK↑
Recovery Time xCLR to xCLK
Hold Time HIGH or LOW, xDx after xCLK↑
Set-up Time HIGH or LOW, xCLKEN LOW before xCLK↑
Hold Time HIGH or LOW, xCLKEN LOW after xCLK↑
xCLK Pulse Width HIGH or LOW
xCLR Pulse Width LOW
Output Skew
(2)
1.3
1
2
1.8
1.3
3.3
3.3
—
—
—
—
—
—
—
—
—
1.3
1
2
1.8
1.3
3.3
3.3
—
—
—
—
—
—
—
—
500
ns
ns
ns
ns
ns
ns
ns
ps
—
7.1
1.1
6
ns
—
8.3
1.6
7.2
ns
—
8.8
2.5
7.9
ns
Min.
150
—
Max.
—
8.9
V
CC
= 3.3V ± 0.3V
Min.
150
1.4
Max.
—
8
Unit
MHz
ns
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. T
A
= – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
4
IDT74LVC16823A
3.3V CMOS 18-BIT REGISTER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
V
LOAD
V
IH
V
T
V
LZ
V
HZ
C
L
V
CC
= 3.3V±0.3V
6
2.7
1.5
300
300
50
V
CC
500Ω
Pulse
(1, 2)
Generator
V
IN
D.U.T.
R
T
500Ω
C
L
LVC Link
(1)
V
CC(1)
= 2.7V
6
2.7
1.5
300
300
50
V
CC
= 2.5V±0.2V
2 x Vcc
Vcc
Vcc / 2
150
150
30
(2)
Unit
V
V
V
mV
mV
pF
V
LOAD
Open
GND
SAME PHASE
INPUT TRANSITION
t
PLH
OUTPUT
t
PLH
OPPOSITE PHASE
INPUT TRANSITION
t
PHL
t
PHL
V
IH
V
T
0V
V
OH
V
T
V
OL
V
IH
V
T
0V
LVC Link
Propagation Delay
ENABLE
CONTROL
INPUT
t
PZL
OUTPUT
SWITCH
NORMALLY
CLOSED
LOW
t
PZH
OUTPUT
SWITCH
NORMALLY
OPEN
HIGH
V
LOAD/2
V
T
t
PHZ
V
T
0V
t
PLZ
DISABLE
V
IH
V
T
0V
V
LOAD/2
V
OL+
V
LZ
V
OL
V
OH
V
OH-
V
HZ
0V
LVC Link
V
OUT
Test Circuit for All Outputs
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator.
NOTES:
1. Pulse Generator for All Pulses: Rate
≤
10MHz; t
F
≤
2.5ns; t
R
≤
2.5ns.
2. Pulse Generator for All Pulses: Rate
≤
10MHz; t
F
≤
2ns; t
R
≤
2ns.
Enable and Disable Times
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
SWITCH POSITION
Test
Open Drain
Disable Low
Enable Low
Disable High
Enable High
All Other Tests
Switch
V
LOAD
GND
Open
V
IH
V
T
0V
V
OH
V
T
V
OL
V
OH
V
T
V
OL
t
PLH2
t
PHL2
LVC Link
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS
CONTROL
SYNCHRONOUS
CONTROL
t
SU
t
H
t
REM
t
SU
t
H
V
IH
V
T
0V
V
IH
V
T
0V
V
IH
V
T
0V
V
IH
V
T
0V
LVC Link
INPUT
Set-up, Hold, and Release Times
LOW-HIGH-LOW
PULSE
t
W
HIGH-LOW-HIGH
PULSE
V
T
LVC Link
t
PLH1
t
PHL1
OUTPUT 1
V
T
t
SK
(x)
t
SK
(x)
OUTPUT 2
t
SK
(x)
= t
PLH2
-
t
PLH1
or
t
PHL2
-
t
PHL1
Pulse Width
Output Skew - t
SK
(
X
)
NOTES:
1. For t
SK
(o) OUTPUT1 and OUTPUT2 are any two outputs.
2. For t
SK
(b) OUTPUT1 and OUTPUT2 are in the same bank.
5
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