TC74LCX373F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX373F,TC74LCX373FT,TC74LCX373FK Low-Voltage Octal D-Type Latch with 5-V Tolerant Inputs and Outputs The TC74LCX373 is a high-performance CMOS octal D-type latch. 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 both inputs and outputs. This 8 bit D-type latch is controlled by a latch enable input (LE) and an output enable input ( OE ). When the OE input is high, the eight outputs are in a high-impedance state. All inputs are equipped with protection circuits against static discharge. TC74LCX373F TC74LCX373FT Features • Low-voltage operation: VCC = 1.65 V to 3.6 V • High-speed operation: tpd = 8.0 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 JEITA SOP, TSSOP and VSSOP (US) • Power-down protection provided on all inputs and outputs • Pin and function compatible with the 74 series TC74LCX373FK (74AC/VHC/HC/F/ALS/LS etc.) 373 type Weight SOP20-P-300-1.27A TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.22 g (typ.) : 0.08 g (typ.) : 0.03 g (typ.) Note: The Electrical Characteristics of VCC=1.8±0.15V is only applicable for products which manufactured from January 2009 onward. 1 2010-09-15 TC74LCX373F/FT/FK Pin Assignment (top view) IEC Logic Symbol OE 1 20 VCC Q0 2 19 Q7 D0 3 18 D7 1 11 OE LE 3 D0 D1 D1 4 17 D6 Q1 5 16 Q6 Q2 6 15 Q5 D2 7 14 D5 D2 D3 D4 D5 D6 D3 8 13 D4 Q3 9 12 Q4 GND 10 11 LE EN C1 D7 2 1D Q0 4 5 7 6 8 9 13 12 14 15 17 16 18 19 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Truth Table Inputs Outputs OE LE D H X X Z L L X Qn L H L L L H H H X: Don’t care Z: High impedance Qn: Q outputs are latched at the time when the LE input is taken to a low logic level. System Diagram D0 D1 3 D LE OE 11 D2 7 4 D L Q D3 D L Q D4 8 D L Q D5 13 D L Q D6 14 D L Q D7 18 17 D L Q D L Q L Q 1 2 Q0 5 6 9 Q1 Q2 Q3 2 12 Q4 15 Q5 16 Q6 19 Q7 2010-09-15 TC74LCX373F/FT/FK 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 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 2010-09-15 TC74LCX373F/FT/FK Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristics H-level Symbol Test Condition ⎯ VIH Input voltage L-level ⎯ VIL Min Max 1.65 to2.3 VCC×0.9 ⎯ 2.3 to2.7 1.7 ⎯ 2.7 to 3.6 2.0 ⎯ 1.65 to2.3 ⎯ VCC×0.1 2.3 to2.7 ⎯ 0.7 2.7 to 3.6 ⎯ 0.8 VCC− 0.2 ⎯ VCC (V) IOH = −100 μA 1.65 to 3.6 H-level VOH 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 V 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 VIN/VOUT = 5.5 V 0 ⎯ 10.0 μA 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 VIN = VIH or VIL Output voltage L-level Unit VIN = VIH or VIL VIN = 0 to 5.5 V VIN = VIH or VIL VOUT = 0 to 5.5 V 4 V μA 2010-09-15 TC74LCX373F/FT/FK AC Characteristics (Ta = −40 to 85°C) Characteristics Propagation delay time (D-Q) Symbol tpLH tpHL Propagation delay time tpLH (LE-Q) tpHL Output enable time Output disable time tpZL tpZH tpLZ tpHZ Minimum pulse width (LE) Minimum setup time Minimum hold time Output to output skew Note: tw (H) ts th Test Condition Figure 1, Figure 2 Figure 1, Figure 2 Figure 1, Figure 3 Figure 1, Figure 3 Figure 1, Figure 2 Figure 1, Figure 2 Figure 1, Figure 2 tosLH (Note) tosHL Min Max 1.8±0.15 ⎯ 30.0 2.5±0.2 ⎯ 10.0 2.7 ⎯ 9.0 3.3 ± 0.3 1.5 8.0 1.8±0.15 ⎯ 30.0 2.5±0.2 ⎯ 10.5 2.7 ⎯ 9.5 3.3 ± 0.3 1.5 8.5 1.8±0.15 ⎯ 34.0 2.5±0.2 ⎯ 17.0 2.7 ⎯ 9.5 3.3 ± 0.3 1.5 8.5 1.8±0.15 ⎯ 32.0 2.5±0.2 ⎯ 16.0 2.7 ⎯ 8.5 3.3 ± 0.3 1.5 7.5 1.8±0.15 12.0 ⎯ 2.5±0.2 6.0 ⎯ 2.7 4.0 ⎯ 3.3 ± 0.3 3.3 ⎯ 1.8±0.15 10.0 ⎯ 2.5±0.2 5.0 ⎯ 2.7 2.5 ⎯ 3.3 ± 0.3 2.5 ⎯ 1.8±0.15 1.5 ⎯ 2.5±0.2 1.5 ⎯ 2.7 1.5 ⎯ 3.3 ± 0.3 1.5 ⎯ 2.7 ⎯ ⎯ 3.3 ± 0.3 ⎯ 1.0 VCC (V) Unit ns ns ns ns ns ns ns ns Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) 5 2010-09-15 TC74LCX373F/FT/FK Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω) Characteristics Symbol Test Condition 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 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. Average operating current can be obtained by the equation: ICC (opr) = CPD･VCC･fIN + ICC/8 (per bit) AC Test Circuit RL Switch Parameter Switch tpLH, tpHL Open 6.0 V Measure tpLZ, tpZL RL CL Output Open 6.0 V or VCC×2 GND @ VCC =3.3±0.3V @ VCC =2.7V VCC×2 @ VCC =2.5±0.2V @ VCC =1.8±0.15V tpHZ, tpZH GND Figure 1 6 2010-09-15 TC74LCX373F/FT/FK AC Waveform tf tr Input (LE) 10% tf tr Input (D) VIH 90% VIM VIM GND tw (H) VIH 90% VIM VIM th (H) ts (L) 10% GND ts (H) th (L) VOH Output (Q) VOM VOM tpLH tpHL tpHL VOL tpLH Figure 2 tpLH, tpHL, tw, ts, th tr tf 90% VIM Output Enable ( OE ) VIH 10% tpLZ GND tpZL VOH Output (Q) Low to Off to Low VOM tpHZ VX VOH VY Output (Q) 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 2010-09-15 TC74LCX373F/FT/FK Package Dimensions Weight: 0.22 g (typ.) 8 2010-09-15 TC74LCX373F/FT/FK Package Dimensions Weight: 0.08 g (typ.) 9 2010-09-15 TC74LCX373F/FT/FK Package Dimensions Weight: 0.03 g (typ.) 10 2010-09-15 TC74LCX373F/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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