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TC74LCX157F/FN/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX157F,TC74LCX157FN,TC74LCX157FT,TC74LCX157FK
Low Voltage Quad 2-Channel Multiplexer with 5 V Tolerant Inputs and Outputs
The TC74LCX157 is a high-performance CMOS multiplexer. Designed for use in 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. The device is designed for low-voltage (3.3 V) VCC applications, but it could be used to interface to 5-V supply environment for inputs. It consists of four 2-input digital multiplexers with common SELECT and ST inputs. When the ST input is held "H" level, selection of data is inhibited and all the outputs become "L" level. The SELECT decoding determines whether the A or B inputs get routed to their corresponding Y outputs. All inputs are equipped with protection circuits against static discharge.
Note: xxxFN (JEDEC SOP) is not available in Japan. TC74LCX157F
TC74LCX157FN
Features
* * * * * * * Low-voltage operation: VCC = 2.0 to 3.6 V High-speed operation: tpd = 5.8 ns (max) (VCC = 3.0 to 3.6 V) Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) Latch-up performance: -500 mA Available in JEDEC SOP, JEITA SOP, TSSOP and VSSOP (US) Power-down protection provided on all inputs and outputs Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 157 type
TC74LCX157FT
TC74LCX157FK
Weight SOP16-P-300-1.27A SOL16-P-150-1.27 TSSOP16-P-0044-0.65A VSSOP16-P-0030-0.50
: 0.18 g (typ.) : 0.12 g (typ.) : 0.06 g (typ.) : 0.02 g (typ.)
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Pin Assignment (top view) IEC Logic Symbol
(15) (1) (2) (3) (5) (6) (11) (10) (14) (13)
SELECT 1A 1B 1Y 2A 2B 2Y GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC
ST
EN G1
1 1 MUX (4) (7) (9) (12)
ST
4A 4B 4Y 3A 3B 3Y
SELECT 1A 1B 2A 2B 3A 3B 4A 4B
1Y
2Y 3Y 4Y
Truth Table
Inputs Outputs
ST H L L L L
SELECT X L L H H
A X L H X X
B X X X L H
Y L L H L H
X: Don't care
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System Diagram
2 3 5 6 11 10 14 13 12 4Y 9 3Y 7 2Y 4 1Y
1A 1B 2A 2B 3A 3B 4A 4B
SELECT
1
ST
15
Absolute Maximum Ratings (Note 1)
Characteristics Power supply voltage DC input voltage DC output voltage Input diode current Output diode current DC output current Power dissipation DC VCC/ground current Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT PD ICC/IGND Tstg Rating
-0.5 to 7.0 -0.5 to 7.0 -0.5 to 7.0 (Note 2) -0.5 to VCC + 0.5 (Note 3) -50 50 50
Unit V V V mA (Note 4) mA mA mW mA C
180
100 -65 to 150
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/"Derating Concept and Methods") and individual reliability data (i.e. reliability test report and estimated failure rate, etc). Note 2: VCC = 0 V Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC
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Operating Ranges (Note 1)
Characteristics Power supply voltage Input voltage Output voltage Symbol VCC VIN VOUT Rating 2.0 to 3.6 1.5 to 3.6 (Note 2) 0 to 5.5 0 to 5.5 (Note 3) 0 to VCC (Note 4)
24 12 -40 to 85
Unit V V V
Output current Operating temperature Input rise and fall time
IOH/IOL Topr dt/dv
(Note 5) (Note 6)
mA C
0 to 10
(Note 7)
ns/V
Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. Note 2: Data retention only Note 3: VCC = 0 V Note 4: High or low state Note 5: VCC = 3.0 to 3.6 V Note 6: VCC = 2.7 to 3.0 V Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V
Electrical Characteristics
DC Characteristics (Ta = -40 to 85C)
Characteristics H-level L-level Symbol VIH VIL Test Condition

VCC (V) 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 3.0 3.0 2.7 to 3.6 2.7 3.0 3.0 2.7 to 3.6 0 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6
Min 2.0
Max
Unit
Input voltage
V
0.8

IOH = -100 A H-level VOH VIN = VIH or VIL IOH = -12 mA IOH = -18 mA Output voltage IOH = -24 mA IOL = 100 A L-level VOL VIN = VIH or VIL IOL = 12 mA IOL = 16 mA IOL = 24 mA Input leakage current Power-off leakage current Quiescent supply current Increase in Icc per input IIN IOFF ICC
ICC
VCC -0.2 2.2 2.4 2.2

V
0.2 0.4 0.4 0.55
5.0 A A
VIN = 0 to 5.5 V VIN/VOUT = 5.5 V VIN = VCC or GND VIN = 3.6 to 5.5 V VIH = VCC - 0.6 V
10.0 10.0
10.0
A
500
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AC Characteristics (Ta = -40 to 85C)
Characteristics Propagation delay time (A, B-Y) Propagation delay time (SELECT-Y) Propagation delay time ( ST -Y) Output to output skew Symbol tpLH tpHL tpLH tpHL tpLH tpHL tosLH tosHL Test Condition VCC (V) 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 (Note) 2.7 3.3 0.3 Min
Max 6.3 5.8 8.0 7.0 8.0 7.0
Unit
Figure 1, Figure 2
1.5
ns
Figure 1, Figure 2
1.5
ns
Figure 1, Figure 2
1.5

ns
1.0
ns
Note:
Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|)
Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 )
Characteristics Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Symbol VOLP |VOLV| Test Condition VIH = 3.3 V, VIL = 0 V VIH = 3.3 V, VIL = 0 V VCC (V) 3.3 3.3 Typ. 0.8 0.8 Unit V V
Capacitive Characteristics (Ta = 25C)
Characteristics Input capacitance Output capacitance Power dissipation capacitance Symbol CIN COUT CPD fIN = 10 MHz Test Condition

VCC (V) 3.3 0 (Note) 3.3
Typ. 7 8 25
Unit pF pF pF
Note:
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr) = CPDVCCfIN + ICC
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AC Test Circuit
Output
CL RL
Measure
CL = 50 pF RL = 500
Figure 1 AC Waveform
tr 2.5 ns Input tf 2.5 ns 90% 1.5 V 10% 2.7 V GND VOH 1.5 V tpLH Inverting Output tpHL tpHL VOL VOH 1.5 V tpLH VOL
Non-Inverting Output
Figure 2 tpLH, tpHL
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Package Dimensions
Weight: 0.18 g (typ.)
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Package Dimensions (Note)
Note:
This package is not available in japan.
Weight: 0.12 g (typ.)
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Package Dimensions
Weight: 0.06 g (typ.)
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Package Dimensions
Weight: 0.02 g (typ.)
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RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
20070701-EN GENERAL
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer's own risk. * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. * Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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