U74CBT3257 [UTC]
4-BIT 1-OF-2 FET MULTIPLEXER/ DEMULTIPLEXER;
| 型号： | U74CBT3257 |
| 厂家： | 
Unisonic Technologies |
| 描述： | 4-BIT 1-OF-2 FET MULTIPLEXER/ DEMULTIPLEXER |
| 文件： | 总6页 (文件大小：201K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
U74CBT3257
CMOS IC
4-BIT 1-OF-2 FET
MULTIPLEXER/
DEMULTIPLEXER
DESCRIPTION
The U74CBT3257 is a 4-bit 1-of-2 high-speed TTL-compatible
FET multiplexer/demultiplexer. The low on-state resistance of the
switch allows connections to be made with minimal propagation
delay.
Output-enable ( OE ) and select-control (S) inputs select the
appropriate B1 and B2 outputs for the A-input data.
FEATURES
* VCC Operating Range From 4V to 5.5V
* Bidirectional Data Flow, With minimal Propagation Delay
* Low ON-State Resistance (RON) Characteristics (RON =5Ω Typ.)
* Low Power Consumption ICC =3μA (Max)
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
U74CBT3257L-R16-T
U74CBT3257L-R16-R
U74CBT3257L-P16-T
U74CBT3257L-P16-R
U74CBT3257G-R16-T
U74CBT3257G-R16-R
U74CBT3257G-P16-T
U74CBT3257G-P16-R
SSOP-16
SSOP-16
TSSOP-16
TSSOP-16
Tube
Tape Reel
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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CMOS IC
PIN CONFIGURATION
FUNCTION TABLE
INPUT
INPUT/OUTPUT
A
FUNCTION
S2
L
OE
L
B1
B2
Z
A port=B1 port
A port=B2 port
Disconnect
L
H
X
H
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CMOS IC
LOGIC DIAGRAM
1A
2A
SW
1B1
1B2
2B1
2B2
SW
SW
SW
3A
4A
3B1
3B2
SW
SW
SW
SW
4B1
4B2
S
OE
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CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
-0.5 ~ 7
UNIT
V
Supply Voltage
DC Input Voltage(see Note 2,3)
VIN
-0.5 ~ 7
V
VIN(SW)
VOUT(SW)
IIK
DC Switch Voltage(see Note 2,3)
-0.5 ~7
V
Control Input Clamp Current
DC VCC or GND Current
-50
mA
mA
ICC
±100
IIN(SW)
IOUT(SW)
TSTG
ON-State Switch Current
Storage Temperature
±128
mA
°C
-65~+150
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. All voltages are with respect to ground
3. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are
observed.
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
73
UNIT
°C/W
SSOP-16
TSSOP-16
Junction to Ambient
θJA
108
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
SYMBOL
VCC
MIN
4
TYP
MAX
5.5
5.5
0.8
5.5
85
UNIT
V
High-Level Control Input Voltage
Low-Level Control Input Voltage
Data Input Voltage
VIH
2
V
VIL
0
V
VIN
0
V
Operating Temperature
TA
-40
°C
ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VIK
TEST CONDITIONS
VCC =4.5V, IIN = -18mA
VCC =5.5V, VIN =VCC or GND
CC=5.5 V, IIN /IOUT =0
VIN=VCC or GND, Switch ON or OFF
VCC=5.5V, One input at 3.4V,
MIN TYP MAX UNIT
Control Input Clamp Voltage
Input Leakage Current
-1.2
V
II(LEAK)
±1
µA
V
Quiescent Supply Current
ICC
3
µA
Additional Quiescent Supply
Current
ΔICC
CIN
2.5 mA
Other inputs at VCC or GND
VIN=3V or 0 VCC=5V
Control Input Capacitance
A Port Input Capacitance
B Port Input Capacitance
3.5
6.5
4
pF
pF
pF
VIN/VOUT=3V or 0, VCC=5V
VIN=VCC or GND, Switch OFF
VCC=4V, VIN=2.4V,IOUT = -15mA
CIO(OFF)
14
5
20
7
Ω
Ω
Ω
Ω
IOUT =64mA
ON-Resistance
RON
VCC=4.5V, VIN=0
IOUT =30mA
IOUT =-15mA
5
7
VCC=4.5V, VIN=2.4V
10
15
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CMOS IC
SWITCHING CHARACTERISTICS (CL=50pF, RL=500Ω, see TEST CIRCUIT AND WAVEFORMS)
PARAMETER
SYMBOL
tpd
TEST CONDITIONS
VCC=4V
MIN TYP MAX UNIT
0.35 ns
From input (A or B) to output (B or A) (Note)
From input S to output A
VCC= 5V±0.5V
VCC=4V
0.25 ns
5.5
1.6 5..0
5.7
ns
ns
ns
tpd(s)
VCC= 5V±0.5V
VCC=4V
From input S to output B
VCC= 5V±0.5V
VCC=4V
1.6
5.2 ns
ten
5.6
ns
ns
ns
ns
ns
ns
From input OE to output (A or B)
From input S to output B
VCC= 5V±0.5V
1.8 5.1
5.2
V
CC=4V
VCC= 5V±0.5V
CC=4V
VCC= 5V±0.5V
1.0 5.0
5.5
tdis
V
From input OE to output (A or B)
2.2 5.5
Note: The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and
the specified load capacitance, when driven by an ideal voltage source (zero output impedance).
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
VCC
4V
VI
VCC or GND
VCC or GND
GND
tR / tF
V∆
VEXT
Open
Open
7V
CL
RL
≤2.5ns
≤2.5ns
≤2.5ns
≤2.5ns
≤2.5ns
≤2.5ns
50pF
50pF
50pF
50pF
50pF
50pF
500Ω
500Ω
500Ω
500Ω
500Ω
500Ω
tPLH/tPHL
5V±0.5V
4V
0.3V
0.3V
0.3V
0.3V
tPLZ/tPZL
tPHZ/tPZH
5V±0.5V
4V
GND
7V
VCC
Open
Open
5V±0.5V
VCC
PROPAGATION DELAY TIMES
Notes: 1. CL includes probe and jig capacitance.
ENABLE AND DISABLE TIMES
2. All input pulses are supplied by generators having the following characteristics: PRR≤10MHz,
ZO=50Ω, tr≤2.5ns, tf≤2.5 ns.
3. The outputs are measured one at a time with one transition per measurement.
4. tPLZ and tPHZ are the same as tdis.
5. tPZL and tPZH are the same as ten.
6. tPLH and tPHL are the same as tpd(s).
7. All parameters and waveforms are not applicable to all devices.
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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