74VCX16245
Low−Voltage 1.8/2.5/3.3V
16−Bit Transceiver
With 3.6 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
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The 74VCX16245 is an advanced performance, non−inverting
16−bit transceiver. 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 overvoltage tolerant to 3.6 V.
The VCX16245 is designed with byte control. It can be operated as
two separate octals, or with the controls tied together, as a 16−bit wide
function. The Transmit/Receive (T/Rn) inputs determine the direction
of data flow through the bi−directional transceiver. Transmit
(active−HIGH) enables data from A ports to B ports; Receive
(active−LOW) enables data from B to A ports. The Output Enable
inputs (OEn), when HIGH, disable both A and B ports by placing them
in a HIGH Z condition.
Features
48
1
TSSOP−48
DT SUFFIX
CASE 1201
•
Designed for Low Voltage Operation: V
CC
= 1.65−3.6 V
•
3.6 V Tolerant Inputs and Outputs
•
High Speed Operation: 2.5 ns max for 3.0 to 3.6 V
•
•
•
•
•
•
MARKING DIAGRAM
48
3.0 ns max for 2.3 to 2.7 V
6.0 ns max for 1.65 to 1.95 V
Static Drive:
±24
mA Drive at 3.0 V
±18
mA Drive at 2.3 V
±6
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
mA)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds
±250
mA @ 125°C
ESD Performance: Human Body Model >2000 V;
Machine Model >200 V
VCX16245
AWLYYWW
1
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
74VCX16245DT
74VCX16245DTR
Package
TSSOP
TSSOP
Shipping
†
39 / Rail
2500/Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2006
June, 2006
−
Rev. 7
1
Publication Order Number:
74VCX16245/D
74VCX16245
T/R1 1
B0 2
B1 3
GND 4
B2 5
B3 6
V
CC
7
B4 8
B5 9
GND 10
B6 11
B7 12
B8 13
B9 14
GND 15
B10 16
B11 17
V
CC
18
B12 19
B13 20
GND 21
B14 22
B15 23
T/R2 24
48 OE1
47 A0
46 A1
45 GND
44 A2
43 A3
42 V
CC
41 A4
40 A5
39 GND
38 A6
37 A7
36 A8
35 A9
34 GND
33 A10
32 A11
31 V
CC
30 A12
29 A13
28 GND
27 A14
26 A15
25 OE2
One of Eight
A0:7
B0:7
A8:15
B8:15
T/R1
1
48
T/R2
24
25
OE1
OE2
Figure 2. Logic Diagram
T/R1
48
OE1
25
OE2
24
T/R2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
1
1
1
1
EN1
EN2
EN3
EN4
1
1
∇
2
3
5
6
8
9
11
2
∇
3
∇
12
13
14
16
4
∇
17
19
20
22
23
Figure 1. 48−Lead Pinout
(Top View)
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
Figure 3. IEC Logic Diagram
Table 1. PIN NAMES
Pins
OEn
T/Rn
A0−A15
B0−B15
Function
Output Enable Inputs
Transmit/Receive Inputs
Side A Inputs or 3−State Outputs
Side B Inputs or 3−State Outputs
TRUTH TABLE
Inputs
OE1
L
L
H
T/R1
L
H
X
Outputs
Bus B0:7 Data to Bus A0:7
Bus A0:7 Data to Bus B0:7
High Z State on A0:7, B0:7
OE2
L
L
H
Inputs
T/R2
L
H
X
Outputs
Bus B8:15 Data to Bus A8:15
Bus A8:15 Data to Bus B8:15
High Z State on A8:15, B8:15
H = High Voltage Level
L = Low Voltage Level
X = High or Low Voltage Level and Transitions Are Acceptable
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2
74VCX16245
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
I
GND
T
STG
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Parameter
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
DC Input Diode Current
DC Output Diode Current
−50
−50
+50
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
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
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
Dt/DV
Supply Voltage
Input Voltage
Output Voltage
HIGH Level Output Current, V
CC
= 3.0 V
−
3.6 V
LOW Level Output Current, V
CC
= 3.0 V
−
3.6 V
HIGH Level Output Current, V
CC
= 2.3 V
−
2.7 V
LOW Level Output Current, V
CC
= 2.3 V
−
2.7 V
HIGH Level Output Current, V
CC
= 1.65 V
−
1.95 V
LOW Level Output Current, V
CC
= 1.65 V
−
1.95 V
Operating Free−Air Temperature
Input Transition Rise or Fall Rate, V
IN
from 0.8 V to 2.0 V, V
CC
= 3.0 V
−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
−24
24
−18
18
−6
6
+85
10
Unit
V
V
V
mA
mA
mA
mA
mA
mA
°C
ns/V
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3
74VCX16245
DC ELECTRICAL CHARACTERISTICS
T
A
=
−40°C
to +85°C
Symbol
V
IH
Characteristic
HIGH Level Input Voltage (Note 2)
Condition
1.65 V
≤
V
CC
< 2.3 V
2.3 V
≤
V
CC
≤
2.7 V
2.7 V < V
CC
≤
3.6 V
V
IL
LOW Level Input Voltage (Note 2)
1.65 V
≤
V
CC
< 2.3 V
2.3 V
≤
V
CC
≤
2.7 V
2.7 V < V
CC
≤
3.6 V
V
OH
HIGH Level Output Voltage
1.65 V
≤
V
CC
≤
3.6 V; I
OH
=
−100
mA
V
CC
= 1.65 V; I
OH
=
−6
mA
V
CC
= 2.3 V; I
OH
=
−6
mA
V
CC
= 2.3 V; I
OH
=
−12
mA
V
CC
= 2.3 V; I
OH
=
−18
mA
V
CC
= 2.7 V; I
OH
=
−12
mA
V
CC
= 3.0 V; I
OH
=
−18
mA
V
CC
= 3.0 V; I
OH
=
−24
mA
V
OL
LOW Level Output Voltage
1.65 V
≤
V
CC
≤
3.6 V; I
OL
= 100
mA
V
CC
= 1.65 V; I
OL
= 6 mA
V
CC
= 2.3 V; I
OL
= 12 mA
V
CC
= 2.3 V; I
OL
= 18 mA
V
CC
= 2.7 V; I
OL
= 12 mA
V
CC
= 3.0 V; I
OL
= 18 mA
V
CC
= 3.0 V; I
OL
= 24 mA
I
I
I
OZ
I
OFF
I
CC
DI
CC
Input Leakage Current
3−State Output Current
Power−Off Leakage Current
Quiescent Supply Current (Note 3)
Increase in I
CC
per Input
1.65 V
≤
V
CC
≤
3.6 V; 0 V
≤
V
I
≤
3.6 V
1.65 V
≤
V
CC
≤
3.6 V; 0 V
≤
V
O
≤
3.6 V;
V
I
= V
IH
or V
IL
V
CC
= 0 V; V
I
or V
O
= 3.6 V
1.65 V
≤
V
CC
≤
3.6 V; V
I
= GND or V
CC
1.65 V
≤
V
CC
≤
3.6 V; 3.6 V
≤
V
I
, V
O
≤
3.6 V
2.7 V < V
CC
≤
3.6 V; V
IH
= V
CC
−
0.6 V
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
0.4
0.55
±5.0
±10
10
20
±20
750
mA
mA
mA
mA
mA
mA
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
= 2.0 ns; C
L
= 30 pF; R
L
= 500
W)
T
A
=
−40°C
to +85°C
V
CC
= 3.0 V to 3.6 V
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
2.5
2.5
3.8
3.8
3.7
3.7
0.5
0.5
V
CC
= 2.3 V to 2.7 V
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
3.0
3.0
4.9
4.9
4.2
4.2
0.5
0.5
V
CC
= 1.65 V to1.95 V
Min
1.5
1.5
1.5
1.5
1.5
1.5
Max
6.0
6.0
9.3
9.3
7.6
7.6
0.75
0.75
Unit
ns
ns
ns
ns
4. For C
L
= 50 pF, add approximately 300 ps 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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74VCX16245
AC CHARACTERISTICS
(t
R
= t
F
= 2.0 ns; C
L
= 50 pF; R
L
= 500
W)
T
A
=
−40°C
to +85°C
V
CC
= 3.0 V 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 6)
Waveform
3
4
4
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
3.0
3.0
4.4
4.4
4.1
4.1
0.5
0.5
Min
V
CC
= 2.7 V
Max
3.6
3.6
5.4
5.4
4.6
4.6
0.5
0.5
Unit
ns
ns
ns
ns
6. 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.
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25°C
Symbol
V
OLP
Characteristic
Dynamic LOW Peak Voltage
(Note 7)
Condition
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
OLV
Dynamic LOW Valley Voltage
(Note 7)
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
OHV
Dynamic HIGH Valley Voltage
(Note 8)
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
Typ
0.25
0.6
0.8
−0.25
−0.6
−0.8
1.5
1.9
2.2
V
V
Unit
V
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 LOW state.
8. 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 9
Note 9
Note 9, 10 MHz
Typical
6
7
20
Unit
pF
pF
pF
9. V
CC
= 1.8 V, 2.5 V or 3.3 V; V
I
= 0 V or V
CC
.
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