TC7MB3257FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MB3257FK Quad 1-of-2 Multiplexer/Demultiplexer The TC7MB3257FK is high-speed CMOS quad 1-2 multiplexer/demultiplexer. The low on resistance of the switch allows connections to be made with minimal propagation delay time. This device consists of four individual two-inputs multiplexer/demultiplexer with common select input (S) and output enable (OE). The A inputs is connected to the B1 or B2 outputs determined by the combination both the select input (S) and output enable (OE). When the output enable (OE) input is held “H” level, the switches are open with regardless the state of select inputs and a high-impedance state exists between the switches. All inputs are equipped with protection circuits against static discharge. Features • Weight: 0.02 g (typ.) Pin Assignment (top view) Operating voltage: VCC = 4.5~5.5 V • High speed: tpd = 0.25 ns (max) • Low on resistance: RON = 5 Ω (typ.) • ESD performance: Machine model > ±200 V Human body model > ±2000 V • Compatible with TTL outputs (control inputs) • Package: VSSOP (US16) • Pin compatible with the 74xx257 type. Functionally equivalent to (FST/CBT) 3257. 1 S 1 16 VCC 1B1 2 15 OE 1B2 3 14 4B1 1A 4 13 4B2 2B1 5 12 4A 2B2 6 11 3B1 2A 7 10 3B2 GND 8 9 3A 2001-09-12 TC7MB3257FK Truth Table Inputs Function OE S L L A port = B1 port L H A port = B2 port H X Disconnect System Diagram 1A 4 2 3 2A 7 5 6 3A 9 11 10 4A 12 14 13 S 1B1 1B2 2B1 2B2 3B1 3B2 4B1 4B2 1 15 OE 2 2001-09-12 TC7MB3257FK Maximum Ratings Characteristics Symbol Rating Unit Power supply range VCC −0.5~7.0 V DC input voltage VIN −0.5~7.0 V DC switch voltage VS −0.5~7.0 V Input diode current IIK −50 mA Continuous channel current IS 128 mA Power dissipation PD 180 mW DC VCC/GND current ICC/IGND ±100 mA Storage temperature Tstg −65~150 °C Symbol Rating Unit Supply voltage VCC 4.5~5.5 V Input voltage VIN 0~5.5 V Switch voltage VS 0~5.5 V Operating temperature Topr −40~85 °C Input rise and fall time dt/dv 0~10 ns/V Recommended Operating Conditions Characteristics Electrical Characteristics DC Characteristics (Ta = −40~85°C) Characteristics Symbol Test Condition Min Typ. (Note1) Max VCC (V) Unit “H” level VIH 4.5~5.5 2.0 “L” level VIL 4.5~5.5 0.8 4.5~5.5 ±1.0 µA 0 ±1.0 µA 4.5~5.5 ±1.0 µA IIS = 64 mA 4.5 5 7 IIS = 30 mA 4.5 5 7 VIS = 2.4 V, IIS = 15 mA 4.5 10 15 ICC VIN = VCC or GND, IOUT = 0 5.5 10 µA ∆ICC VIN = 3.4 V (one input) 5.5 2.5 mA Input voltage Input leakage current ( OE , S) Power off leakage current IIN IOFF A, B, OE = 0~5.5 V ISZ A, B = 0~5.5 V, OE = VCC Off-state leakage current (switch off) ON resistance (Note2) Increase in ICC per input VIN = 0~5.5 V RON VIS = 0 V V Ω Note 1: Typical values are at VCC = 5 V, Ta = 25°C. Note 2: Measured by the voltage drop between A and B pins at the indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A or B) pins. 3 2001-09-12 TC7MB3257FK AC Characteristics (Ta = −40~85°C) Characteristics Symbol Test Condition Min Max Unit 4.5 0.25 ns Figure 1, Figure 2 4.5 5.0 ns Figure 1, Figure 3 4.5 5.5 ns Figure 1, Figure 3 4.5 5.5 ns Figure 1, Figure 3 4.5 5.0 ns Figure 1, Figure 3 4.5 5.0 ns VCC (V) Propagation delay time tpLH (bus to bus) tpHL Propagation delay time tpLH (S to bus) tpHL Output enable time tpZL ( OE to bus) tpZH Output enable time tpZL (S to bus) tpZH Output disable time tpLZ ( OE to bus) tpHZ Output disable time tpLZ (S to bus) tpHZ Figure 1, Figure 2 (Note3) Note 3: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical on resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage the source (zero output impedance). Capacitive Characteristics (Ta = 25°C) Characteristics Symbol Test Condition Typ. Unit VCC (V) Control pin input capacitance ( OE , S) CIN Switch terminal capacitance (B1~2) CI/O Switch terminal capacitance (A) CI/O (Note4) 5.0 3 pF OE = VCC (Note4) 5.0 10 pF OE = VCC (Note4) 5.0 17 pF Note 4: This parameter is guaranteed by design. 4 2001-09-12 TC7MB3257FK AC Test Circuit RL Switch Open 7.0 V GND Measure RL CL Output CL = 50 pF RL = 500 Ω Parameter Switch tpLH, tpHL Open tpLZ, tpZL 7.0 V tpHZ, tpZH Open Figure 1 AC Waveform tf 2.5 ns tr 2.5 ns 3.0 V 90% 1.5 V Input 10% GND VOH Output 1.5 V tpLH, tpHL Figure 2 VOL tpHL, tPLH tpLH, tpHL tf 2.5 ns tr 2.5 ns 3.0 V 90% 1.5 V Output Enable ( OE ) 10% tpLZ GND tpZL 3.5 V Output (A, B) Low to Off to Low 1.5 V tpHZ VOL + 0.3 V VOL tpZH VOH VOH − 0.3 V Output (A, B) High to Off to High 1.5 V GND Outputs enabled Figure 3 Outputs disabled Outputs enabled tpLZ, tpHZ, tpZL, tpZH 5 2001-09-12 TC7MB3257FK Package Dimensions Weight: 0.02 g (typ.) 6 2001-09-12 TC7MB3257FK RESTRICTIONS ON PRODUCT USE 000707EBA • 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 this document shall be made at the customer’s own risk. • The products described in this document are subject to the foreign exchange and foreign trade laws. • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. • The information contained herein is subject to change without notice. 7 2001-09-12