74ABT16245CSSCX

© 2005 Fairchild Semiconductor Corporation DS010986 www.fairchildsemi.com
April 1992
Revised May 2005
74ABT16245 16-Bit Transceiver with 3-STATE Outputs
74ABT16245
16-Bit Transceiver with 3-STATE Outputs
General Description
The ABT16245 contains sixteen non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is byte controlled. Each
byte has separate control inputs which can be shorted
together for full 16-bit operation. The T/R
inputs determine
the direction of data flow through the device. The OE
inputs
disable both the A and B ports by placing them in a high
impedance state.
Features
Bidirectional non-inverting buffers
Separate control logic for each byte
16-bit version of the ABT245
A and B output sink capability of 64 mA, source
capability of 32 mA
Guaranteed output skew
Guaranteed multiple output switching specifications
Output switching specified for both 50 pF and
250 pF loads
Guaranteed simultaneous switching noise level and
dynamic threshold performance
Guaranteed latchup protection
High impedance glitch free bus loading during entire
power up and power down cycle
Non-destructive hot insertion capability
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Connection Diagram
Order Number Package Number Package Description
74ABT16245CSSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide
74ABT16245CMTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Pin Names Description
OE
n
Output Enable Input (Active LOW)
T/R
n
Transmit/Receive Input
A
0
A
15
Side A Inputs/Outputs
B
0
B
15
Side B Inputs/Outputs
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74ABT16245
Truth Tables
H HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
Z
High Impedance
Functional Description
The ABT16245 contains sixteen non-inverting bidirectional
buffers with 3-STATE outputs. The device is byte controlled
with each byte functioning identically, but independent of
the other. The control pins can be shorted together to
obtain full 16-bit operation.
Logic Diagrams
Inputs Outputs
OE
1
T/R
1
L L Bus B
0
B
7
Data to Bus A
0
A
7
L H Bus A
0
A
7
Data to Bus B
0
B
7
H X HIGH-Z State on A
0
A
7
, B
0
B
7
Inputs Outputs
OE
2
T/R
2
L L Bus B
8
B
15
Data to Bus A
8
A
15
L H Bus A
8
A
15
Data to Bus B
8
B
15
H X HIGH-Z State on A
8
A
15
, B
8
B
15
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74ABT16245
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Note 3: Guaranteed, but not tested.
Storage Temperature 65 C to 150 C
Ambient Temperature under Bias
55 C to 125 C
Junction Temperature under Bias
55 C to 150 C
V
CC
Pin Potential to Ground Pin 0.5V to 7.0V
Input Voltage (Note 2)
0.5V to 7.0V
Input Current (Note 2)
30 mA to 5.0 mA
Voltage Applied to Any Output
in the Disabled or
Power-Off State
0.5V to 5.5V
in the HIGH State
0.5V to V
CC
Current Applied to Output
in LOW State (Max) twice the rated I
OL
(mA)
DC Latchup Source Current
500 mA
Over Voltage Latchup (I/O) 10V
Free Air Ambient Temperature
40 C to 85 C
Supply Voltage
4.5V to 5.5V
Minimum Input Edge Rate (
V/ t)
Data Input 50 mV/ns
Enable Input 20 mV/ns
Symbol Parameter Min Typ Max Units
V
CC
Conditions
V
IH
Input HIGH Voltage 2.0 V Recognized HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized LOW Signal
V
CD
Input Clamp Diode Voltage 1.2 V Min I
IN
18 mA (OE
n
, T/R
n
)
V
OH
Output HIGH Voltage 2.5 V Min I
OH
3 mA (A
n
, B
n
)
2.0 V Min I
OH
32 mA (A
n
, B
n
)
V
OL
Output LOW Voltage 0.55 V Min I
OL
64 mA (A
n
, B
n
)
I
IH
Input HIGH Current 1 AMaxV
IN
2.7V (OE
n
, T/R
n
) (Note 3)
1V
IN
V
CC
(OE
n
, T/R
n
)
I
BVI
Input HIGH Current Breakdown Test 7 AMaxV
IN
7.0V (OE
n
, T/R
n
)
I
BVIT
Input HIGH Current Breakdown Test (I/O) 100 AMaxV
IN
5.5V (A
n
, B
n
)
I
IL
Input LOW Current 1 AMaxV
IN
0.5V (OE
n
, T/R
n
) (Note 3)
1V
IN
0.0V (OE
n
, T/R
n
)
V
ID
Input Leakage Test 4.75 V 0.0 I
ID
1.9 A (OE
n
, T/R
n
)
All Other Pins Grounded
I
IH
I
OZH
Output Leakage Current 10 A0 5.5V V
OUT
2.7V (A
n
, B
n
); OE 2.0V
I
IL
I
OZL
Output Leakage Current 10 A0 5.5V V
OUT
0.5V (A
n
, B
n
); OE 2.0V
I
OS
Output Short-Circuit Current 100 275 mA Max V
OUT
0.0V (A
n
, B
n
)
I
CEX
Output HIGH Leakage Current 50 AMaxV
OUT
V
CC
(A
n
, B
n
)
I
ZZ
Bus Drainage Test 100 A0.0V
OUT
5.50V (A
n
, B
n
);
All Others GND
I
CCH
Power Supply Current 100 A Max All Outputs HIGH
I
CCL
Power Supply Current 60 mA Max All Outputs LOW
I
CCZ
Power Supply Current 100 AMaxOE
n
V
CC
, T/R
n
GND or V
CC
All others at V
CC
or GND
I
CCT
Additional I
CC
/Input Outputs Enabled 2.5 mA V
I
V
CC
2.1V
Outputs 3-STATE 2.5 mA Max OE
n
, T/ R
n
V
I
V
CC
2.1V
Outputs 3-STATE 50 A Data Input V
I
V
CC
2.1V
All others at V
CC
or GND
I
CCD
Dynamic I
CC
No Load mA/ Max Outputs OPEN
(Note 3) 0.1 MHz OE
n
GND, T/R
n
GND or V
CC
One Bit Toggling, 50% Duty Cycle

74ABT16245CSSCX

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
IC TXRX NON-INVERT 5.5V 48SSOP
Lifecycle:
New from this manufacturer.
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