Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74CBT1G385
CMOS IC
SINGLE FET BUS SWITCH

DESCRIPTION
The U74CBT1G385 features a single high-speed line switch. The
switch is disabled when the output-enable(OE) input is high.
The U74CBT1G385 is characterized for operation from -40°C to
85°C.

FEATURES
* 5-Ω Switch Connection Between Two Ports
* TTL-compatible Control Input Levels
* Packaged in Plastic Small-Outline Transistor Packages

ORDERING INFORMATION
Ordering Number
U74CBT1G385G-AE5-R
U74CBT1G385G-AL5-R

Package
SOT-23-5
SOT-353
Packing
Tape Reel
Tape Reel
MARKING
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QW-R502-802.B
U74CBT1G385

CMOS IC
PIN CONFIGURATION
OE
4
VCC
5
1
A

3
GND
FUNCTION TABLE (each gate)
INPUT OE
L
H

2
B
OUTPUT
Disconnect
A port = B port
LOGIC DIAGRAM (positive logic)
IEC logic symbol
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U74CBT1G385

CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C , unless otherwise specified) (Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Input Voltage
VIN
-0.5~7
V
Continuous channel current
ICH
128
mA
Input Clamp Current(VI<0)
IIK
-50
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Notes: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.

RECOMMENDED OPERATING COMDITIONS
PARAMETER
SYMBOL
VCC
VIH
VIL
TA
Supply Voltage
High-control input voltage
Low-control input voltage
Operating Temperature

TYP
MAX
5.5
UNIT
V
V
V
°C
0.8
+85
-40
STATIC CHARACTERISTICS
PARAMETER
Digital Input Diode Voltage
Input Leakage Current
VCC or GND Current
Control input
I/O Capacitance (OFF)
Resistor between two ports

MIN
4
2
SYMBOL
VIK
IIN
ICC
CIN
CIO
RON
TEST CONDITIONS
VCC =4.5V, II=-18mA
VCC =5.5V, VI=VCC or GND
VCC = 5.5V, VI=5.5V or GND, IO=0
VO=3V or 0
VO=3V or 0, OE= VCC
VCC =4V, TYP at VCC =4V,
VI=2.4V, II=15mA
II=64mA
VCC =4.5V, VI=0V
II=30mA
VCC =4.5V, VI=2.4V, II=15mA
MIN
TYP
MAX
-1.2
±1
1
UNIT
V
μA
μA
pF
pF
14
20
Ω
5
5
10
7
7
15
Ω
Ω
Ω
TYP
MAX
0.35
0.25
5.5
4.9
4.5
4.2
UNIT
ns
ns
ns
ns
ns
ns
3
4
DYNAMIC CHARACTERISTICS (Input: tR, tF≤2.5ns; PRR≤10MHz; CL=50pF)
See Fig. 1 and Fig. 2 for test circuit and waveforms.
PARAMETER
SYMBOL
TEST CONDITIONS
VCC=4V, CL=50pF, RL=500Ω
From input (A or B) to output
tpd
(B or A) (Note)
VCC= 5V±0.5V, CL=50pF, RL=500Ω
VCC=4V, CL=50pF, RL=500Ω
From input OE to output (A or B)
ten
VCC= 5V±0.5V, CL=50pF, RL=500Ω
VCC=4V, CL=50pF, RL=500Ω
From input OE to output (A or B)
tdis
VCC= 5V±0.5V, CL=50pF, RL=500Ω
Notes: 1. tpd: tPLH and tPHL.
2. ten: tPZL and tPZH.
3. tdis: tPLZ and tPHZ.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.6
1
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS (CL=50pF, RL=500Ω, VLOAD=7V, VM=1.5V, VIN=3V)
Note: CL includes probe and jig capacitance.
Fig. 1 Load circuitry for switching times.
Fig. 2 Propagation delay from input(A) to output(B) and Output transition time.
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U74CBT1G385
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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