TC74LCX257F/FN/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX257F,TC74LCX257FN,TC74LCX257FT Low-Voltage Quad 2-Channel Multiplexer (3-state) with 5-V Tolerant Inputs and Outputs Note: The TC74LCX257 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 is composed of four independent 2-channel multiplexers with common select and OE . If OE is set low, the outputs are held in a high-impedance state. When SELECT is set low, “A” data inputs are enabled. Conversely, when SELECT is high, “B” data inputs are enabled. All inputs are equipped with protection circuits against static discharge. xxxFN (JEDEC SOP) is not available in Japan. TC74LCX257F TC74LCX257FN Features • Low-voltage operation: VCC = 2.0 to 3.6 V • High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V) • Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) • Latch-up performance: −500 mA • Available in JEDEC SOP, JEITA SOP and TSSOP • Power-down protection provided on all inputs and outputs • Pin and function compatible with the 74 series TC74LCX257FT (74AC/VHC/HC/F/ALS/LS etc.) 257 type Weight SOP16-P-300-1.27A SOL16-P-150-1.27 TSSOP16-P-0044-0.65A 1 : 0.18 g (typ.) : 0.12 g (typ.) : 0.06 g (typ.) 2007-10-19 TC74LCX257F/FN/FT Pin Assignment (top view) IEC Logic Symbol OE SELECT 1 16 VCC 1A 2 15 OE 1B 3 14 4A 1A SELECT 1Y 4 13 4B 1B 2A 5 12 4Y 2B 2B 6 11 3A 2Y 7 10 3B GND 8 9 3Y 2A 3A 3B 4A 4B (15) (1) (2) (3) (5) (6) (11) (10) (14) (13) EN G1 1 1 MUX (4) (7) (9) (12) 1Y 2Y 3Y 4Y Truth Table Inputs Outputs OE SELECT A B Y H X X X Z L L L X L L L H X H L H X L L L H X H H X: Don’t care Z: High impedance System Diagram SELECT 1A 1B 2A 2B 3A 3B 4A 4B OE 1 2 4 3 1Y 5 7 6 2Y 11 9 10 3Y 14 12 13 4Y 15 2 2007-10-19 TC74LCX257F/FN/FT Absolute Maximum Ratings (Note 1) Characteristics Symbol Rating Unit Power supply voltage VCC −0.5 to 7.0 V DC input voltage VIN −0.5 to 7.0 V −0.5 to 7.0 (Note 2) DC output voltage VOUT −0.5 to VCC + 0.5 V (Note 3) Input diode current IIK −50 Output diode current IOK ±50 DC output current IOUT ±50 mA Power dissipation DC VCC/ground current Storage temperature mA (Note 4) mA PD 180 mW ICC/IGND ±100 mA Tstg −65 to 150 °C 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: Output in OFF state Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC Operating Ranges (Note 1) Characteristics Symbol Power supply voltage VCC Input voltage VIN Output voltage VOUT Output current IOH/IOL Rating Unit 2.0 to 3.6 1.5 to 3.6 (Note 2) 0 to 5.5 V 0 to 5.5 (Note 3) 0 to VCC (Note 4) ±24 (Note 5) ±12 (Note 6) Operating temperature Topr −40 to 85 Input rise and fall time dt/dv 0 to 10 V V mA °C (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: Output in OFF state 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 3 2007-10-19 TC74LCX257F/FN/FT Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristics Input voltage Symbol Test Condition H-level VIH ⎯ L-level VIL ⎯ H-level VOH Min Max 2.7 to 3.6 2.0 ⎯ 2.7 to 3.6 ⎯ 0.8 IOH = −100 μA 2.7 to 3.6 VCC −0.2 ⎯ IOH = −12 mA 2.7 2.2 ⎯ IOH = −18 mA 3.0 2.4 ⎯ IOH = −24 mA 3.0 2.2 ⎯ IOL = 100 μA 2.7 to 3.6 ⎯ 0.2 IOL = 12 mA 2.7 ⎯ 0.4 IOL = 16 mA 3.0 ⎯ 0.4 IOL = 24 mA 3.0 ⎯ 0.55 2.7 to 3.6 ⎯ ±5.0 μA 2.7 to 3.6 ⎯ ±5.0 μA 0 ⎯ 10.0 μA VIN = VCC or GND 2.7 to 3.6 ⎯ 10.0 VIN/VOUT = 3.6 to 5.5 V 2.7 to 3.6 ⎯ ±10.0 VIH = VCC − 0.6 V 2.7 to 3.6 ⎯ 500 Min Max 2.7 ⎯ 6.5 3.3 ± 0.3 1.5 6.0 2.7 ⎯ 8.5 3.3 ± 0.3 1.5 7.0 2.7 ⎯ 8.5 3.3 ± 0.3 1.5 7.0 2.7 ⎯ 6.0 3.3 ± 0.3 1.5 5.5 2.7 ⎯ ⎯ 3.3 ± 0.3 ⎯ 1.0 VIN = VIH or VIL Output voltage L-level VOL Input leakage current IIN 3-state output OFF state current IOZ Power-off leakage current IOFF Quiescent supply current ICC Increase in Icc per input ΔICC VIN = VIH or VIL VCC (V) VIN = 0 to 5.5 V VIN = VIH or VIL VOUT = 0 to 5.5 V VIN/VOUT = 5.5 V Unit V V μA AC Characteristics (Ta = −40 to 85°C) Characteristics Symbol Propagation delay time tpLH (A, B-Y) tpHL Propagation delay time tpLH (SELECT-Y) Output enable time Output disable time Output to output skew Note: tpHL tpZL tpZH tpLZ tpHZ Test Condition VCC (V) Figure 1, Figure 2 Figure 1, Figure 2 Figure 1, Figure 3 Figure 1, Figure 3 tosLH (Note) tosHL Unit ns ns ns ns ns Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) 4 2007-10-19 TC74LCX257F/FN/FT Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω) Characteristics Test Condition Symbol VCC (V) Typ. Unit Quiet output maximum dynamic VOL VOLP VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Quiet output minimum dynamic VOL |VOLV| VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Typ. Unit Capacitive Characteristics (Ta = 25°C) Characteristics Input capacitance Output capacitance Power dissipation capacitance Note: Symbol Test Condition CIN ⎯ 3.3 7 pF COUT ⎯ 3.3 8 pF 3.3 25 pF VCC (V) fIN = 10 MHz CPD (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) = CPD･VCC･fIN + ICC AC Test Circuit RL Switch Parameter Switch tpLH, tpHL Open tpLZ, tpZL 6.0 V tpHZ, tpZH GND RL Measure CL Output Open 6.0 V GND CL = 50 pF RL = 500 Ω Figure 1 AC Waveform tr 2.5 ns tf 2.5 ns 2.7 V 90% 1.5 V Input 10% GND VOH Non-Inverting Output 1.5 V tpLH tpHL VOL VOH Inverting Output 1.5 V tpHL tpLH VOL Figure 2 tpLH, tpHL 5 2007-10-19 TC74LCX257F/FN/FT tr 2.5 ns tf 2.5 ns 2.7 V 90% 1.5 V Output Enable ( OE ) 10% tpLZ GND tpZL 3.0 V Output (Y) Low to Off to Low 1.5 V tpHZ VOL + 0.3 V VOH − 0.3 V Output (Y) High to Off to High VOL tpZH VOH 1.5 V GND Outputs enabled Outputs disabled Outputs enabled Figure 3 tpLZ, tpHZ, tpZL, tpZH 6 2007-10-19 TC74LCX257F/FN/FT Package Dimensions Weight: 0.18 g (typ.) 7 2007-10-19 TC74LCX257F/FN/FT Package Dimensions (Note) Note: This package is not available in Japan. Weight: 0.12 g (typ.) 8 2007-10-19 TC74LCX257F/FN/FT Package Dimensions Weight: 0.06 g (typ.) 9 2007-10-19 TC74LCX257F/FN/FT RESTRICTIONS ON PRODUCT USE 20070701-EN GENERAL • The information contained herein is subject to change without notice. • 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. 10 2007-10-19