TC74LCX16245FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX16245FT Low-Voltage 16-Bit Bus Transceiver with 5-V Tolerant Inputs and Outputs The TC74LCX16245FT is a high-performance CMOS 16-bit bus transceiver. Designed for use in 2.5-V or 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. The device is designed for low-voltage (2.5-V or 3.3-V) VCC applications, but it could be used to interface to 5-V supply environment for both inputs and outputs. This 16-bit bus transceiver is controlled by direction control (DIR) inputs and output enable ( OE ) inputs which are common to each byte. It can be used as two 8-bit transceiver or one 16-bit Weight: 0.25 g (typ.) transceiver. The direction of data transmission is determined by the level of the DIR inputs. The OE inputs can be used to disable the device so that the busses are effectively isolated. All inputs are equipped with protection circuits against static discharge. Features (Note) • Low-voltage operation: VCC = 2.0 to 3.6 V • High-speed operation: tpd = 4.5 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 • Package: TSSOP • Bidirectional interface between 5.0 V and low-voltage (2.5-V or 3.3-V) signals • Power-down protection provided on all inputs and outputs Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result. All floating (high impedance) bus pins must have their input level fixed by means of pull-up or pull-down resistors. 1 2007-10-19 TC74LCX16245FT Pin Assignment (top view) IEC Logic Symbol 1DIR 1 48 1OE 1B1 2 47 1A1 1B2 3 46 1A2 GND 4 45 GND 1B3 5 44 1A3 1B4 VCC 1B5 6 7 8 43 42 41 1OE 1DIR 2OE 2DIR 9 GND 10 1B7 11 40 39 38 1A1 1A4 1A2 1A3 VCC 1A4 1A5 1A5 1A6 1A7 1A8 GND 2A1 1A7 2A2 1B8 12 2B1 13 2B2 14 37 36 35 1A8 2A3 2A4 2A1 2A5 2A6 2A2 2A7 GND 15 34 GND 2B3 16 33 2A3 2B4 17 32 2A4 VCC 18 31 VCC 2B5 19 30 2A5 2B6 20 29 2A6 GND 21 28 GND 2B7 22 27 2A7 2B8 23 26 2A8 2DIR 24 25 2OE 1 25 24 G3 3 EN1 (BA) 3 EN2 (AB) G6 6 EN4 (BA) 6 EN5 (AB) 1A6 1B6 48 2A8 2 47 1 2 46 2 1B1 3 1B2 44 5 43 6 41 8 40 9 38 11 12 37 36 35 13 4 5 14 33 16 32 17 30 19 29 20 27 22 26 23 1B3 1B4 1B5 1B6 1B7 1B8 2B1 2B2 2B3 2B4 2B5 2B6 2B7 2B8 2007-10-19 TC74LCX16245FT Truth Table Inputs Function Outputs 1OE 1DIR Bus 1A1-1A8 Bus 1B1-1B8 L L Output Input A=B L H Input Output B=A H X Z Inputs Z Function Outputs 2OE 2DIR Bus 2A1-2A8 Bus 2B1-2B8 L L Output Input A=B L H Input Output B=A H X Z Z X: Don’t care Z: High impedance System Diagram 1DIR 2DIR 1OE 1A1 2OE 1B1 2B1 2A1 1/8 3 2007-10-19 TC74LCX16245FT Absolute Maximum Ratings (Note 1) Characteristics Power supply voltage Symbol Rating Unit VCC −0.5 to 6.0 V VIN −0.5 to 7.0 V DC input voltage (DIR, OE ) DC bus I/O voltage VI/O Input diode current IIK −0.5 to 7.0 (Note 2) −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 per supply pin Storage temperature (Note 4) mA PD 400 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 Power supply voltage Symbol VCC Input voltage Output current Unit 2.0 to 3.6 1.5 to 3.6 (Note 2) VIN (DIR, OE ) Bus I/O voltage Rating 0 to 5.5 V 0 to 5.5 (Note 3) VI/O 0 to VCC (Note 4) IOH/IOL ±24 (Note 5) ±12 (Note 6) ±8 (Note 7) Operating temperature Topr −40 to 85 Input rise and fall time dt/dv 0 to 10 V V mA °C (Note 8) 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. Please connect both bus inputs and the bus outputs with VCC or GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is not short-circuited. 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: VCC = 2.3 to 2.7 V Note 8: VIN = 0.8 to 2.0 V, VCC = 3.0 V 4 2007-10-19 TC74LCX16245FT Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristics H-level Min Max 2.3 to 2.7 1.7 ⎯ 2.7 to 3.6 2.0 ⎯ 2.3 to 2.7 ⎯ 0.7 2.7 to 3.6 ⎯ 0.8 2.3 to 3.6 VCC − 0.2 ⎯ IOH = −8 mA 2.3 1.8 ⎯ IOH = −12 mA 2.7 2.2 IOH = −18 mA 3.0 2.4 ⎯ IOH = −24 mA 3.0 2.2 ⎯ IOL = 100 μA 2.3 to 3.6 ⎯ 0.2 IOL = 8 mA 2.3 ⎯ 0.6 IOL = 12 mA 2.7 ⎯ 0.4 IOL = 16 mA 3.0 ⎯ 0.4 IOL = 24 mA 3.0 ⎯ 0.55 2.3 to 3.6 ⎯ ±5.0 μA 2.3 to 3.6 ⎯ ±5.0 μA VIN/VOUT = 5.5 V 0 ⎯ 10.0 μA VIN = VCC or GND 2.3 to 3.6 ⎯ 20.0 VIN/VOUT = 3.6 to 5.5 V 2.3 to 3.6 ⎯ ±20.0 VIH = VCC − 0.6 V 2.3 to 3.6 ⎯ 500 Symbol 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 5 VCC (V) Unit V V μA 2007-10-19 TC74LCX16245FT AC Characteristics (Ta = −40 to 85°C) Characteristics Propagation delay time 3-state output enable time 3-state output disable time Output to output skew Note: Symbol tpLH tpHL tpZL tpZH tpLZ tpHZ Test Condition 30 1.5 5.4 50 1.5 5.2 2.5 ± 0.2 2.7 3.3 ± 0.3 50 1.5 4.5 2.5 ± 0.2 30 1.5 8.5 2.7 50 1.5 7.2 3.3 ± 0.3 50 1.5 6.5 2.5 ± 0.2 30 1.5 7.7 2.7 50 1.5 6.9 3.3 ± 0.3 50 1.5 6.0 2.5 ± 0.2 30 ⎯ ⎯ 2.7 50 ⎯ ⎯ 3.3 ± 0.3 50 ⎯ 1.0 Figure 1, Figure 3 Figure 1, Figure 3 (Note) tosHL Max CL(pF) Figure 1, Figure 2 tosLH Min 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, RL = 500 Ω) Characteristics Symbol Quiet output maximum dynamic VOL VOLP Quiet output minimum dynamic VOL |VOLV| Test Condition VCC (V) Typ. VIH = 2.5 V, VIL = 0 V, CL =30pF 2.5 0.6 VIH = 3.3 V, VIL = 0 V, CL =50pF 3.3 0.8 VIH = 2.5 V, VIL = 0 V, CL =30pF 2.5 0.6 VIH = 3.3 V, VIL = 0 V, CL =50pF 3.3 0.8 Unit V V Capacitive Characteristics (Ta = 25°C) Characteristics Symbol Test Condition Input capacitance CIN ⎯ Bus input capacitance CI/O ⎯ Power dissipation capacitance CPD Note: fIN = 10 MHz Typ. Unit 3.3 7 pF 3.3 8 pF 3.3 25 pF 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/16 (per bit) 6 2007-10-19 TC74LCX16245FT AC Test Circuit 6.0 V or VCC × 2 Open GND RL Switch Measure Switch tpLH, tpHL Open 6.0 V VCC × 2 tpLZ, tpZL RL CL Output Parameter tpHZ, tpZH @VCC = 3.3 ± 0.3 V @VCC = 2.5 ± 0.2 V GND RL = 500 Ω Figure 1 AC Waveform tr 2.5 ns tf 2.5 ns VIH 90% VM Input (An, Bn) 10% GND VOH Output (Bn, An) VM VOL tpHL tpLH Figure 2 tpLH, tpHL tr 2.5 ns tf 2.5 ns VIH 90% VM Output Enable ( OE ) 10% tpLZ GND tpZL 3.0 V or Vcc Output (An, Bn) Low to Off to Low VM tpHZ VX VOH VY Output (An, Bn) High to Off to High VOL tpZH VM GND Outputs enabled Outputs disabled Outputs enabled Figure 3 tpLZ, tpHZ, tpZL, tpZH Symbol VCC 3.3 ± 0.3 V 2.7 V 2.5 ± 0.2 V VIH 2.7 V 2.7 V VCC VM 1.5 V 1.5 V VCC/2 VX VOL + 0.3 V VOL + 0.3 V VOL + 0.15 V VY VOH − 0.3 V VOH − 0.3 V VOH − 0.15 V 7 2007-10-19 TC74LCX16245FT Package Dimensions Weight: 0.25 g (typ.) 8 2007-10-19 TC74LCX16245FT RESTRICTIONS ON PRODUCT USE 20070701-EN • 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. • 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. 9 2007-10-19