74VCX162244
Low-Voltage 1.8/2.5/3.3V
16-Bit Buffer
With 26
Ω
Series Resistors 3.6 V–Tolerant
Inputs and Outputs (3–State, Non–Inverting)
The 74VCX162244 is an advanced performance, non–inverting
16–bit buffer. It is designed for very high–speed, very low–power
operation in 1.8 V, 2.5 V or 3.3 V systems.
When operating at 2.5 V (or 1.8 V) the part is designed to tolerate
voltages it may encounter on either inputs or outputs when interfacing
to 3.3 V busses. It is guaranteed to be over–voltage tolerant to 3.6 V.
The 74VCX162244 is nibble controlled with each nibble
functioning identically, but independently. It is designed with 26
Ω
series resistors in each of the outputs to reduce noise. The control pins
may be tied together to obtain full 16–bit operation. The 3–state
outputs are controlled by an Output Enable (OEn) input for each
nibble. When OEn is LOW, the outputs are on. When OEn is HIGH,
the outputs are in the high impedance state.
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MARKING DIAGRAM
48
48
74VCX162244DT
1
AWLYYWW
TSSOP–48
DT SUFFIX
CASE 1201
1
= Assembly Location
= Wafer Lot
= Year
= Work Week
•
Designed for Low Voltage Operation: V
CC
= 1.65–3.6 V
•
3.6 V Tolerant Inputs and Outputs
•
High Speed Operation: 3.3 ns max for 3.0 to 3.6 V
•
•
•
•
•
•
3.8 ns max for 2.3 to 2.7 V
7.6 ns max for 1.65 to 1.95 V
Static Drive:
±12
mA Drive at 3.0 V
±8
mA Drive at 2.3 V
±3
mA Drive at 1.65 V
Supports Live Insertion and Withdrawal
I
OFF
Specification Guarantees High Impedance When V
CC
= 0 V
Near Zero Static Supply Current in All Three Logic States (20
µA)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds
±300
mA @ 125°C
ESD Performance: Human Body Model >2000 V; Machine Model >200 V
A
WL
YY
WW
ORDERING INFORMATION
Device
74VCX162244DT
74VCX162244DTR
Package
TSSOP
TSSOP
Shipping
39 / Rail
2500 / Reel
©
Semiconductor Components Industries, LLC, 2000
1
August, 2000 – Rev. 0
Publication Order Number:
74VCX162244/D
74VCX162244
OE1 1
O0 2
O1 3
GND 4
O2 5
O3 6
V
CC
7
O4 8
O5 9
GND 10
O6 11
O7 12
O8 13
O9 14
GND 15
O10 16
O11 17
V
CC
18
O12 19
O13 20
GND 21
O14 22
O15 23
OE4 24
48 OE2
47 D0
46 D1
45 GND
44 D2
43 D3
42 V
CC
41 D4
40 D5
39 GND
38 D6
37 D7
36 D8
35 D9
34 GND
33 D10
32 D11
31 V
CC
30 D12
29 D13
28 GND
27 D14
26 D15
25 OE3
OE1
48
OE2
25
OE3
24
OE4
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
1
1
1
1
OE1
OE2
1
48
OE3
OE4
25
24
D0:3
O0:3
D8:11
O8:11
D4:7
O4:7
D12:15
O12:15
One of Four
Figure 2. Logic Diagram
EN1
EN2
EN3
EN4
1
1
∇
2
3
5
6
8
9
11
2
∇
3
∇
12
13
14
16
4
∇
Figure 1. 48–Lead Pinout
(Top View)
PIN NAMES
Pins
OEn
D0–D15
O0–O15
Function
Output Enable Inputs
Inputs
Outputs
17
19
20
22
23
O0
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
O13
O14
O15
OE1
L
L
H
D0:3
L
H
X
O0:3
L
H
Z
OE2
L
L
H
D4:7
L
H
X
O4:7
L
H
Z
OE3
L
L
H
D8:11
L
H
X
O8:11
L
H
Z
OE4
L
L
H
D12:15
L
H
X
O12:15
L
H
Z
H = High Voltage Level; L = Low Voltage Level; Z = High Impedance State; X = High or Low Voltage Level and Transitions Are Acceptable, for
I
CC
reasons, DO NOT FLOAT Inputs
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2
74VCX162244
ABSOLUTE MAXIMUM RATINGS*
Symbol
V
CC
V
I
V
O
Parameter
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Value
–0.5 to +4.6
–0.5
≤
V
I
≤
+4.6
–0.5
≤
V
O
≤
+4.6
–0.5
≤
V
O
≤
V
CC
+ 0.5
I
IK
I
OK
DC Input Diode Current
DC Output Diode Current
–50
–50
+50
I
O
I
CC
I
GND
T
STG
DC Output Source/Sink Current
DC Supply Current Per Supply Pin
DC Ground Current Per Ground Pin
Storage Temperature Range
±50
±100
±100
–65 to +150
Output in 3–State
Note 1.; Outputs Active
V
I
< GND
V
O
< GND
V
O
> V
CC
Condition
Unit
V
V
V
V
mA
mA
mA
mA
mA
mA
°C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or
conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions
is not implied.
1. I
O
absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
I
OH
I
OL
I
OH
I
OL
I
OH
I
OL
T
A
∆t/∆V
Supply Voltage
Input Voltage
Output Voltage
HIGH Level Output Current, V
CC
= 3.0V – 3.6V
LOW Level Output Current, V
CC
= 3.0V – 3.6V
HIGH Level Output Current, V
CC
= 2.3V – 2.7V
LOW Level Output Current, V
CC
= 2.3V – 2.7V
HIGH Level Output Current, V
CC
= 1.65V – 1.95V
LOW Level Output Current, V
CC
= 1.65V – 1.95V
Operating Free–Air Temperature
Input Transition Rise or Fall Rate, V
IN
from 0.8V to 2.0V, V
CC
= 3.0V
–40
0
(Active State)
(3–State)
Parameter
Operating
Data Retention Only
Min
1.65
1.2
–0.3
0
0
Typ
3.3
3.3
Max
3.6
3.6
3.6
V
CC
3.6
–12
12
–8
8
–3
3
+85
10
Unit
V
V
V
mA
mA
mA
mA
mA
mA
°C
ns/V
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74VCX162244
DC ELECTRICAL CHARACTERISTICS
T
A
= –40°C to +85°C
Symbol
V
IH
Characteristic
HIGH Level Input Voltage (Note 2.)
Condition
1.65V
≤
V
CC
< 2.3V
2.3V
≤
V
CC
≤
2.7V
2.7V < V
CC
≤
3.6V
V
IL
LOW Level Input Voltage (Note 2.)
1.65V
≤
V
CC
< 2.3V
2.3V
≤
V
CC
≤
2.7V
2.7V < V
CC
≤
3.6V
V
OH
HIGH Level Output Voltage
1.65V
≤
V
CC
≤
3.6V; I
OH
= –100µA
V
CC
= 1.65V; I
OH
= –3mA
V
CC
= 2.3V; I
OH
= –4mA
V
CC
= 2.3V; I
OH
= –6mA
V
CC
= 2.3V; I
OH
= –8mA
V
CC
= 2.7V; I
OH
= –6mA
V
CC
= 3.0V; I
OH
= –8mA
V
CC
= 3.0V; I
OH
= –12mA
V
OL
LOW Level Output Voltage
1.65V
≤
V
CC
≤
3.6V; I
OL
= 100µA
V
CC
= 1.65V; I
OL
= 3mA
V
CC
= 2.3V; I
OL
= 6mA
V
CC
= 2.3V; I
OL
= 8mA
V
CC
= 2.7V; I
OL
= 6mA
V
CC
= 3.0V; I
OL
= 8mA
V
CC
= 3.0V; I
OL
= 12mA
I
I
I
OZ
I
OFF
I
CC
∆I
CC
Input Leakage Current
3–State Output Current
Power–Off Leakage Current
Quiescent Supply Current (Note 3.)
1.65V
≤
V
CC
≤
3.6V; 0V
≤
V
I
≤
3.6V
1.65V
≤
V
CC
≤
3.6V; 0V
≤
V
O
≤
3.6V;
V
I
= V
IH
or V
IL
V
CC
= 0V; V
I
or V
O
= 3.6V
1.65V
≤
V
CC
≤
3.6V; V
I
= GND or V
CC
1.65V
≤
V
CC
≤
3.6V; 3.6V
≤
V
I
, V
O
≤
3.6V
Increase in I
CC
per Input
2.7V < V
CC
≤
3.6V; V
IH
= V
CC
– 0.6V
2. These values of V
I
are used to test DC electrical characteristics only.
3. Outputs disabled or 3–state only.
V
CC
– 0.2
1.25
2.0
1.8
1.7
2.2
2.4
2.2
0.2
0.3
0.4
0.6
0.4
0.55
0.8
±5.0
±10
10
20
±20
750
µA
µA
µA
µA
µA
µA
V
Min
0.65 x V
CC
1.6
2.0
0.35 x V
CC
0.7
0.8
V
V
Max
Unit
V
AC CHARACTERISTICS
(Note 4.; t
R
= t
F
= 2.0ns; C
L
= 30pF; R
L
= 500Ω)
Limits
T
A
= –40°C to +85°C
V
CC
= 3.0V to 3.6V
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
OSHL
t
OSLH
Parameter
Propagation Delay
Input to Output
Output Enable Time to
High and Low Level
Output Disable Time From
High and Low Level
Output–to–Output Skew
(Note 5.)
Waveform
1
2
2
Min
0.8
0.8
0.8
0.8
0.8
0.8
Max
3.3
3.3
3.8
3.8
3.6
3.6
0.5
0.5
V
CC
= 2.3V to 2.7V
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
3.8
3.8
5.1
5.1
4.0
4.0
0.5
0.5
V
CC
= 1.65 to 1.95V
Min
1.5
1.5
1.5
1.5
1.5
1.5
Max
7.6
7.6
9.8
9.8
7.2
7.2
0.75
0.75
Unit
ns
ns
ns
ns
4. For C
L
= 50pF, add approximately 300ps to the AC maximum specification.
5. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t
OSHL
) or LOW–to–HIGH (t
OSLH
); parameter
guaranteed by design.
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74VCX162244
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25°C
Symbol
V
OLP
Characteristic
Dynamic LOW Peak Voltage
(Note 6.)
Condition
V
CC
= 1.8V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 2.5V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 3.3V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
OLV
Dynamic LOW Valley Voltage
(Note 6.)
V
CC
= 1.8V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 2.5V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 3.3V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
OHV
Dynamic HIGH Valley Voltage
(Note 7.)
V
CC
= 1.8V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 2.5V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
V
CC
= 3.3V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0V
Typ
0.15
0.25
0.35
–0.15
–0.25
–0.35
1.55
2.05
2.65
V
V
Unit
V
6. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.
7. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the HIGH state.
CAPACITIVE CHARACTERISTICS
Symbol
C
IN
C
OUT
C
PD
Parameter
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Condition
Note 8.
Note 8.
Note 8., 10MHz
Typical
6
7
20
Unit
pF
pF
pF
8. V
CC
= 1.8, 2.5 or 3.3V; V
I
= 0V or V
CC
.
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