NC7SZD384L6X

© 2005 Fairchild Semiconductor Corporation DS500016 www.fairchildsemi.com
June 1997
Revised December 2005
NC7SZD384 1-Bit Low Power Bus Switch with Level Shifting
NC7SZD384
1-Bit Low Power Bus Switch with Level Shifting
General Description
The NC7SZD384 provides 1-bit of high-speed CMOS TTL-com-
patible bus switch. The low on resistance of the switch allows
inputs to be connected to outputs with minimal propagation
delay and without generating additional ground bounce noise.
The device is organized as a 1-bit switch with a bus enable (OE
)
signal. When OE
is LOW, the switch is on and Port A is con-
nected to Port B. When OE
is HIGH, the switch is open and a
high-impedance state exists between the two ports. Reduced
voltage drive to the gate of the FET switch permits nominal level
shifting of 5V to 3.3V through the switch.
Features
Space saving SOT23 or SC70 5-lead package
Ultra small MicroPak Pb-Free leadless package
5 switch connection between two ports
Designed to be used in level-shifting applications
Minimal propagation delay through the switch
Low I
CC
Zero bounce in flow-through mode
Control inputs compatible with TTL level
Ordering Code:
Pb-Free package per JEDEC J-STD-020B.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
Order Package Product Code
Package Description Supplied As
Number Number Top Mark
NC7SZD384M5X MA05B 8Z4D 5-Lead SOT23, JEDEC MO-178, 1.6mm 3k Units on Tape and Reel
NC7SZD384P5X MAA05A Z4D 5-Lead SC70, EIAJ SC-88a, 1.25mm Wide 3k Units on Tape and Reel
NC7SZD384L6X MAC06A A4 Pb-Free 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
www.fairchildsemi.com 2
NC7SZD384
Logic Symbol
Pin Descriptions
Function Table
Connection Diagrams
Pin Assignments for SC70 and SOT23
(Top View)
Pad Assignments for MicroPak
(Top Through View)
Pin Name Description
OE Bus Switch Enable
ABus A
BBus B
NC No Connect
OE
B
O
Function
LA
O
Connect
H HIGH-Z State Disconnect
3 www.fairchildsemi.com
NC7SZD384
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions
(Note 3)
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 lim-
its. The parametric values defined in the Electrical Characteristics tables are not
guaranteed at the absolute maximum ratings. The “Recommended Operating Condi-
tions” table will define the conditions for actual device operation.
Note 2: The input and output negative voltage ratings may be exceeded if the input
and output diode current ratings are observed.
Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Note 4: All typical values are at V
CC
5.0V, T
A
25 C.
Note 5: 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 6: Per TTL driven input (V
IN
3.4V, control input only). A and B pins do not contribute to I
CC.
Supply Voltage (V
CC
) 0.5V to 7.0V
DC Switch Voltage (VS)
0.5V to 7.0V
DC Input Voltage (V
IN
) (Note 2) 0.5V to 7.0V
DC Input Diode Current (I
IK
) V
IN
0V 50 mA
DC Output (I
OUT
) Sink Current 128 mA
DC V
CC
/GND Current (I
CC
/GND) 100 mA
Storage Temperature Range (T
STG
) 65 C to 150 C
Junction Temperature under bias (T
J
) 150 C
Junction Lead Temperature (T
L
)
(Soldering, 10 seconds)
260 C
Power Dissipation (P
D
) @ 85 C
SOT23-5 200 mW
SC70-5 150 mW
Power Supply Operating (V
CC
) 4.5V 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
Switch I/O 0 ns/V to DC
Operating Temperature (T
A
) 40 C to 85 C
Thermal Resistance (
JA
)
SOT23-5 300
C/Watt
SC70-5 425
C/Watt
Symbol Parameter
V
CC
T
A
40 C to 85 C
Units Conditions
(V)
Min Typ
(Note 4)
Max
V
IK
Maximum Clamp Diode Voltage 4.5 1.2 VI
IN
18 mA
V
IH
HIGH Level Input Voltage 4.5–5.5 2.0 V
V
IL
LOW Level Input Voltage 4.5–5.5 0.8 V
V
OH
HIGH Level Output Voltage 4.5–5.5 See Figure 3 V V
IN
V
CC
I
I
Input Leakage Current 0–5.5 1.0 A0 V
IN
5.5V
I
OFF
“OFF” Leakage Current 5.5 10.0 A0 A, B, V
CC
R
ON
Switch On Resistance (Note 5) 4.5 5.0 7.0 V
IN
0V, I
I
64 mA
5.0 7.0 V
IN
0V, I
I
30 mA
35.0 50.0 V
IN
2.4V, I
I
15 mA
I
CC
Quiescent Supply Current V
IN
V
CC
or GND, I
O
0
Switch On 5.5 0.8 1.5 mA OE
GND
Switch Off 5.5 10.0 AOE
V
CC
I
CC
Increase in I
CC
per Input (Note 6) 5.5 0.8 2.5 mA OE 3.4V, I
O
0,
Control Input only.

NC7SZD384L6X

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Digital Bus Switch ICs 1-Bit Bus Switch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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