FST16862MTD

© 2005 Fairchild Semiconductor Corporation DS500702 www.fairchildsemi.com
October 2001
Revised June 2005
FST16862 20-Bit Bus Switch
FST16862
20-Bit Bus Switch
General Description
The Fairchild Switch FST16862 provides 20-bits of high-
speed CMOS TTL-compatible bus switching. The low On
Resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating
additional ground bounce noise.
The device is organized as a 20-bit bus switch. When OE
X
is LOW, the switch is ON and Port A is connected to Port B.
When OE
X
is HIGH, a high impedance state exists
between the A and B Ports.
Features
4 switch connection between two ports.
Minimal propagation delay through the switch.
Low l
CC
.
Zero bounce in flow-through mode.
Control inputs compatible with TTL level.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Order Number
Package
Number
Package Description
FST16862QSP MQA48A
(Preliminary)
48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide
FST16862MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
www.fairchildsemi.com 2
FST16862
Connection Diagram Truth Table
Pin Descriptions
Inputs Inputs/Outputs
OE
x
A, B
LA
B
HZ
Pin Name Description
OE
x
Bus Switch Enables
ABus A
BBus B
3 www.fairchildsemi.com
FST16862
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
(Note 4)
Note 1: The Absolute Maximum Ratings are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum rating.
The Recommended Operating Conditions table will define the conditions
for actual device operation.
Note 2: V
S
is the voltage observed/applied at either the A or B Ports across
the switch.
Note 3: The input and output negative voltage ratings may be exceeded if
the input and output diode current ratings are observed.
Note 4: Unused control inputs must be held HIGH or LOW. They may not
float.
DC Electrical Characteristics
Note 5: Typical values are at V
CC
5.0V and T
A
25 C
Note 6: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the
voltages on the two (A or B) pins.
Note 7: Per TTL driven input, control pins only.
Supply Voltage (V
CC
) 0.5V to 7.0V
DC Switch Voltage (V
S
) (Note 2) 0.5V to 7.0V
DC Input Voltage (V
IN
) (Note 3) 0.5V to 7.0V
DC Input Diode Current (l
IK
) V
IN
0V 50 mA
DC Output (I
OUT
) Current 128 mA
DC V
CC
/GND Current (I
CC
/I
GND
) 100 mA
Storage Temperature Range (T
STG
) 65 C to 150 C
Power Supply Operating (V
CC)
4.0V to 5.5V
Input Voltage (V
IN
) 0V to 5.5V
Output Voltage (V
OUT
) 0V to 5.5V
Input Rise and Fall Time (t
r
, t
f
)
Switch Control Input 0 ns/V to 5 ns/V
Switch I/O 0 ns/V to DC
Free Air Operating Temperature (T
A
)-40 C to 85 C
Symbol Parameter
V
CC
(V)
T
A
40 C to 85 C
Units Conditions
Min Typ
(Note 5)
Max
V
IK
Clamp Diode Voltage 4.5 1.2 V I
IN
18 mA
V
IH
HIGH Level Input Voltage 4.0 - 5.5 2.0 V
V
IL
LOW Level Input Voltage 4.0 - 5.5 0.8 V
I
I
Input Leakage Current 5.5 1.0 A0 V
IN
5.5V
0 1.0 AV
IN
5.5V
I
OZ
OFF-STATE Leakage Current 5.5 1.0 A0 A, B V
CC
R
ON
Switch On Resistance 4.5 4 7 V
IN
0V, I
IN
64 mA
(Note 6) 4.5 4 7 V
IN
0V, I
IN
30 mA
4.5 7 12 V
IN
2.4V, I
IN
15 mA
4.0 11 20 V
IN
2.4V, I
IN
15 mA
I
CC
Quiescent Supply Current 5.5 3 AV
IN
V
CC
or GND, I
OUT
0
I
CC
Increase in I
CC
per Input 5.5 2.5 mA One Input at 3.4V
(Note 7) Other Inputs at V
CC
or GND

FST16862MTD

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Digital Bus Switch ICs 20-Bit Bus Switch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet