TC74LCX126F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX126F,TC74LCX126FT,TC74LCX126FK Low-Voltage Quad Bus Buffer with 5-V Tolerant Inputs and Outputs The TC74LCX126 is a high-performance CMOS quad bus buffers. 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. This device requires the 3-state control input (OE) to be set high to place the output into the high impedance state. All inputs are equipped with protection circuits against static discharge. TC74LCX126FT Features • Low-voltage operation: VCC = 1.65 to 3.6 V • High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V) • Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) • • TC74LCX126F Latch-up performance: ＞±500 mA Available in JEDEC SOP, JEITA SOP, TSSOP and VSSOP (US) • • Power-down protection is provided on all inputs and outputs TC74LCX126FK Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 126 type Weight SOP14-P-300-1.27A TSSOP14-P-0044-0.65A VSSOP14-P-0030-0.50 : 0.18 g (typ.) : 0.06 g (typ.) : 0.02 g (typ.) Note: The Electrical Characteristics of VCC=1.8±0.15V is only applicable for products which manufactured from January 2009 onward. 1 2010-01-31 TC74LCX126F/FT/FK Pin Assignment (top view) IEC Logic Symbol 1OE 1 14 VCC 1A 2 13 4OE 1Y 3 12 4A 2OE 4 1OE 1A 2OE 2A 3OE 3A 4Y 11 2A 5 10 3OE 2Y 6 9 3A GND 7 8 3Y 4OE 4A 1 2 EN 4 5 10 9 13 12 3 1Y 6 2Y 8 3Y 11 4Y Truth Table Inputs Outputs OE A Y L X Z H L L H H H X: Don’t care Z: High impedance 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 Input diode current IIK −0.5 to VCC + 0.5 (Note 3) −50 V mA Output diode current IOK ±50 DC output current IOUT ±50 mA Power dissipation DC VCC/ground current Storage temperature (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 range (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 2 2010-01-31 TC74LCX126F/FT/FK Operating Ranges (Note 1) Characteristics Symbol Power supply voltage VCC Input voltage VIN Output voltage VOUT Output current IOH/IOL Rating Unit 1.65 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 2010-01-31 TC74LCX126F/FT/FK Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristics H-level Symbol Min Max 1.65 to 2.3 VCC×0.9 ⎯ 2.3 to 2.7 1.7 ⎯ 2.7 to 3.6 2.0 ⎯ 1.65 to 2.3 ⎯ VCC×0.1 2.3 to 2.7 ⎯ 0.7 2.7 to 3.6 ⎯ 0.8 1.65 to 3.6 VCC−0.2 ⎯ IOH = −4 mA 1.65 1.05 ⎯ IOH = −8 mA 2.3 1.7 ⎯ IOH = −12 mA 2.7 2.2 ⎯ IOH = −18 mA 3.0 2.4 ⎯ IOH = −24 mA 3.0 2.2 ⎯ IOL = 100 μA 1.65 to 3.6 ⎯ 0.2 IOL = 4 mA 1.65 ⎯ 0.45 IOL = 8 mA 2.3 ⎯ 0.7 IOL = 12 mA 2.7 ⎯ 0.4 IOL = 16 mA 3.0 ⎯ 0.4 IOL = 24 mA 3.0 ⎯ 0.55 1.65 to 3.6 ⎯ ±5.0 μA 1.65 to 3.6 ⎯ ±5.0 μA 0 ⎯ 10.0 μA Test Condition ⎯ VIH Input voltage L-level ⎯ VIL IOH = −100 μA H-level VOH 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 VIN = 0 to 5.5 V VIN = VIH or VIL VOUT = 0 to 5.5 V VIN/VOUT = 5.5 V VCC (V) VIN = VCC or GND 1.65 to 3.6 ⎯ 10.0 VIN/VOUT = 3.6 to 5.5 V 1.65 to 3.6 ⎯ ±10.0 VIH = VCC − 0.6 V 2.7 to 3.6 ⎯ 500 4 Unit V V μA 2010-01-31 TC74LCX126F/FT/FK AC Characteristics (Ta = −40 to 85°C) Characteristics Propagation delay time Output enable time Output disable time Output to output skew Note: Symbol tpLH tpHL tpZL tPZH tpLZ tpHZ Test Condition Figure 1, Figure 2 Figure 1, Figure 3 Figure 1, Figure 3 tosLH (Note) tosHL Min Max 1.8±0.15 ⎯ 20.0 2.5±0.2 ⎯ 7.5 2.7 ⎯ 6.5 3.3 ± 0.3 1.5 6.0 1.8±0.15 ⎯ 30.0 2.5±0.2 ⎯ 15.0 2.7 ⎯ 8.0 3.3 ± 0.3 1.5 7.0 1.8±0.15 ⎯ 28.0 2.5±0.2 ⎯ 14.0 2.7 ⎯ 7.0 3.3 ± 0.3 1.5 6.0 2.7 ⎯ ⎯ 3.3 ± 0.3 ⎯ 1.0 VCC (V) Unit ns ns ns ns Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω) Characteristics Symbol Test Condition Quiet output maximum dynamic VOL VOLP VIH = 3.3 V, VIL = 0 V Quiet output minimum dynamic VOL |VOLV| VIH = 3.3 V, VIL = 0 V Typ. Unit 3.3 0.8 V 3.3 0.8 V Typ. Unit VCC (V) 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 CPD fIN = 10 MHz VCC (V) (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/4 (per gate) 5 2010-01-31 TC74LCX126F/FT/FK AC Test Circuit RL Switch Parameter Switch tpLH, tpHL Open Measure 6.0 V RL CL Output Open 6.0 V or VCC×2 GND tpLZ, tpZL @VCC=3.3±0.3V @ VCC=2.7V VCC×2 @ VCC=2.5±0.2V @ VCC=1.8±0.15V tpHZ, tpZH 6 GND 2010-01-31 TC74LCX126F/FT/FK AC Waveform tr tf VIH 90% VIM Input (A) 10% GND VOH Output (Y) VIM VOL tpHL tpLH Figure 2 tpLH, tpHL tf tr Output Enable (OE) 10% VIH 90% VOM GND tpLZ tpZL VOH Output (Y) Low to Off to Low VOM tpHZ VX VOH VY Output (Y) High to Off to High VOL tpZH VOM GND Outputs enabled Outputs disabled Outputs enabled Figure 3 tpLZ, tpHZ, tpZL, tpZH VCC Symbol 3.3 ± 0.3 V 2.7V Input Output Load 2.5 ± 0.2 V 1.8 ± 0.15 V VIH 2.7V VCC VCC VIM 1.5V VCC/2 VCC/2 tr,tf 2.5ns 2.0ns 2.0ns VOM 1.5V VOH/2 VOH/2 VX VOL +0.3V VOL +0.15V VOL +0.15V VY VOH -0.3V VOH -0.15V VOH -0.15V CL 50pF 30pF 30pF RL 500Ω 500Ω 1kΩ 7 2010-01-31 TC74LCX126F/FT/FK Package Dimensions Weight: 0.18 g (typ.) 8 2010-01-31 TC74LCX126F/FT/FK Package Dimensions Weight: 0.06 g (typ.) 9 2010-01-31 TC74LCX126F/FT/FK Package Dimensions Weight: 0.02 g (typ.) 10 2010-01-31 TC74LCX126F/FT/FK RESTRICTIONS ON PRODUCT USE • Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively “Product”) without notice. • This document and any information herein may not be reproduced without prior written permission from TOSHIBA. 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