74VCXH16245
Low−Voltage 1.8/2.5/3.3V
16−Bit Transceiver
With 3.6 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The 74VCXH16245 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 over−voltage tolerant to 3.6 V.
The VCXH16245 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. The data inputs include active bushold
circuitry, eliminating the need for external pull−up resistors to hold
unused or floating inputs at a valid logic state.
Features
http://onsemi.com
48
1
TSSOP−48
DT SUFFIX
CASE 1201
MARKING DIAGRAM
48
VCXH16245
AWLYYWW
•
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
•
•
•
•
•
•
•
•
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
Includes Active Bushold to Hold Unused or Floating Inputs at a Valid
Logic State
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
Pb−Free Package is Available*
1
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
74VCXH16245DT
74VCXH16245DTR
74VCXH16245DTRG
Package
TSSOP
TSSOP
Shipping
†
39 / Rail
2500/Tape & Reel
TSSOP 2500/Tape & Reel
(Pb−Free)
†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.
*NOTE: To ensure the outputs activate in the 3−state condition,
the output enable pins should be connected to V
CC
through a
pull−up resistor. The value of the resistor is determined by the
current sinking capability of the output connected to the OE pin.
©
Semiconductor Components Industries, LLC, 2004
1
May, 2004 − Rev. 3
Publication Order Number:
74VCXH16245/D
74VCXH16245
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
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
T/R1
1
48
T/R2
24
25
OE1
OE2
A0:7
B0:7
A8:15
B8:15
One of Eight
Figure 2. Logic Diagram
EN1
EN2
EN3
EN4
1
1
∇
2
3
5
6
8
9
11
2
∇
3
∇
12
13
14
16
Figure 1. 48−Lead Pinout
(Top View)
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
4
∇
17
19
20
22
23
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
Figure 3. IEC Logic Diagram
Inputs
OE1
L
L
H
T/R1
L
H
X
Outputs
O tp ts
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
O tp ts
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
http://onsemi.com
2
74VCXH16245
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
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 − 1.95 V
LOW Level Output Current, V
CC
= 1.65 − 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
http://onsemi.com
3
74VCXH16245
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
= −100mA
V
CC
= 1.65 V; I
OH
= −6mA
V
CC
= 2.3 V; I
OH
= −6mA
V
CC
= 2.3 V; I
OH
= −12mA
V
CC
= 2.3 V; I
OH
= −18mA
V
CC
= 2.7 V; I
OH
= −12mA
V
CC
= 3.0 V; I
OH
= −18mA
V
CC
= 3.0 V; I
OH
= −24mA
V
OL
LOW Level Output Voltage
1.65 V
≤
V
CC
≤
3.6 V; I
OL
= 100mA
V
CC
= 1.65 V; I
OL
= 6mA
V
CC
= 2.3 V; I
OL
= 12mA
V
CC
= 2.3 V; I
OL
= 18mA
V
CC
= 2.7 V; I
OL
= 12mA
V
CC
= 3.0 V; I
OL
= 18mA
V
CC
= 3.0 V; I
OL
= 24mA
I
I
I
I(HOLD)
(
)
Input Leakage Current
Minimum Bushold Input Current
1.65 V
≤
V
CC
≤
3.6 V; 0V
≤
V
I
≤
3.6 V
V
CC
= 3.0 V, V
IN
= 0.8V
V
CC
= 3.0 V, V
IN
= 2.0V
V
CC
= 2.3 V, V
IN
= 0.7V
V
CC
= 2.3 V, V
IN
= 1.6V
V
CC
= 1.65 V, V
IN
= 0.57V
V
CC
= 1.65 V, V
IN
= 1.07V
I
I ( )
(OD)
Minimum Bushold Over−Drive
Current N d d t Ch
C
t Needed to Change St t
State
V
CC
= 3.6 V, (Note 3.)
V
CC
= 3.6 V, (Note 4.)
V
CC
= 2.7 V, (Note 3.)
V
CC
= 2.7 V, (Note 4.)
V
CC
= 1.95 V, (Note 3.)
V
CC
= 1.95 V, (Note 4.)
I
OZ
I
OFF
I
CC
DI
CC
2.
3.
4.
5.
3−State Output Current
Power−Off Leakage Current
Quiescent Supply Current (Note 5.)
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
Increase in I
CC
per Input
2.7 V < V
CC
≤
3.6 V; V
IH
= V
CC
− 0.6 V
These values of V
I
are used to test DC electrical characteristics only.
An external driver must source at least the specified current to switch from LOW−to−HIGH.
An external driver must source at least the specified current to switch from HIGH−to−LOW.
Outputs disabled or 3−state only.
75
−75
45
−45
25
−25
450
−450
300
−300
200
−200
±10
10
20
±20
750
mA
mA
mA
mA
mA
mA
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
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
http://onsemi.com
4
74VCXH16245
AC CHARACTERISTICS
(Note 6.; t
R
= t
F
= 2.0ns; C
L
= 30pF; R
L
= 500W)
Limits
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 7.)
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 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
6. For C
L
= 50pF, add approximately 300ps to the AC maximum specification.
7. 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 8.)
Condition
V
CC
= 1.8 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
OLV
Dynamic LOW Valley Voltage
(Note 8.)
V
CC
= 1.8 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
OHV
Dynamic HIGH Valley Voltage
(Note 9.)
V
CC
= 1.8 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30pF, V
IH
= V
CC
, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 30pF, 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
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 LOW state.
9. 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 10.
Note 10.
Note 10., 10MHz
Typical
6
7
20
Unit
pF
pF
pF
10. V
CC
= 1.8, 2.5 or 3.3 V; V
I
= 0 V or V
CC
.
AC CHARACTERISTICS
(t
R
= t
F
= 2.0ns; C
L
= 50pF; R
L
= 500W)
Limits
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
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 11.)
Parameter
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
V
CC
= 2.7 V
Min
Max
3.6
3.6
5.4
5.4
4.6
4.6
0.5
0.5
Unit
ns
ns
ns
ns
11. 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.
http://onsemi.com
5
单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
