TC7MET240,244AFK TOSHIBA CMOS Didital Integrated Circuit Silicon Monolithic TC7MET240AFK,TC7MET244AFK Octal Bus Buffer TC7MET240AFK Inverted, 3-State Outputs TC7MET244AFK Non-Inverted, 3-State Outputs The TC7MET240AFK and 244AFK are advanced high speed CMOS octal bus buffers fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent bipolar schottky TTL while maintaining the CMOS low power dissipation. The TC7MET240AFK is an inverting 3-state buffer having two active-low output enables. TC7MET244AFK is a non-inverting 3-state buffer, and has two active-low output enables. These devices are designed to be used with 3-state memory Weight: 0.03 g (typ.) address drivers, etc. The input voltage are compatible with TTL output voltage. These devices may be used as a level converter for interfacing 3.3 V to 5 V system. Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (*) pins without regard to the supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery back up, hot board insertion, etc. *: output in off-state Features · High speed: tpd = 5.6 ns (typ.) (VCC = 5 V) · Low power dissipation: ICC = 4 µA (max) (Ta = 25°C) · Compatible with TTL outputs: VIL = 0.8 V (max) VIH = 2.0 V (min) · Power down protection is provided on all inputs and outputs. · Balanced propagation delays: tpLH ≈ tpHL · Low noise: VOLP = 1.0 V (max) · Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 240/244 type. 1 2001-09-12 TC7MET240,244AFK Pin Assignment (top view) TC7MET240AFK TC7MET244AFK 1G 1 20 VCC 1G 1 20 VCC 1A1 2 19 2G 1A1 2 19 2G 2Y 4 3 18 1Y1 2Y4 3 18 1Y1 1A2 4 17 2A4 1A2 4 17 2A4 2Y3 5 16 1Y 2 2Y3 5 16 1Y2 1A3 6 15 2A3 1A3 6 15 2A3 2Y 2 7 14 1Y 3 2Y2 7 14 1Y3 1A4 8 13 2A2 1A4 8 13 2A2 2 Y1 9 12 1Y 4 2Y1 9 12 1Y4 GND 10 11 2A1 GND 10 11 2A1 IEC Logic Symbol TC7MET240AFK 1G 1A1 1A2 1A3 1A4 2G 2A1 2A2 2A3 2A4 (1) EN 1G (18) (16) (14) (12) (2) (4) (6) (8) (19) TC7MET244AFK 1A1 1A2 1A3 1A4 1Y1 1Y 2 1Y 3 1Y 4 2G EN (9) (7) (5) (3) (11) (13) (15) (17) 2A1 2A2 2A3 2A4 2 Y1 2Y 2 2Y3 2Y 4 (1) EN (18) (16) (14) (12) (2) (4) (6) (8) (19) (11) (13) (15) (17) 1Y1 1Y2 1Y3 1Y4 EN (9) (7) (5) (3) 2Y1 2Y2 2Y3 2Y4 Truth Table Inputs Outputs G An Yn Yn L L L H L H H L H X Z Z X: Don’t care Z: High impedance Yn: TC7MET244AFK Y n : TC7MET240AFK 2 2001-09-12 TC7MET240,244AFK Maximum Ratings Characteristics Symbol Rating Unit Supply voltage range VCC -0.5~7.0 V DC input voltage VIN -0.5~7.0 V DC output voltage VOUT Input diode current IIK -20 Output diode current IOK ±20 DC output current IOUT ±25 mA DC VCC/ground current ICC ±75 mA Power dissipation PD 180 mW Storage temperature Tstg -65~150 °C -0.5~7.0 (Note1) V -0.5~VCC + 0.5 (Note2) mA (Note3) mA Note1: Output in off-state Note2: High or low state. IOUT absolute maximum rating must be observed. Note3: VOUT < GND, VOUT > VCC Recommended Operating Conditions Characteristics Symbol Rating Unit Supply voltage VCC 4.5~5.5 V Input voltage VIN 0~5.5 V Output voltage VOUT 0~5.5 (Note4) 0~VCC (Note5) V Operating temperature Topr -40~85 °C Input rise and fall time dt/dv 0~20 ns/V Note4: Output in off-state Note5: High or low state 3 2001-09-12 TC7MET240,244AFK Electrical Characteristics DC Characteristics Characteristics Input voltage Symbol Ta = 25°C Test Condition Ta = -40~85°C VCC (V) Min Typ. Max Min Max Unit High level VIH ¾ 4.5~5.5 2.0 ¾ ¾ 2.0 ¾ Low level VIL ¾ 4.5~5.5 ¾ ¾ 0.8 ¾ 0.8 High level VOH VIN = VIH IOH = -50 mA or VIL IOH = -8 mA 4.5 4.4 4.5 ¾ 4.4 ¾ 4.5 3.94 ¾ ¾ 3.80 ¾ VOL VIN = VIH IOL = 50 mA or VIL IOL = 8 mA 4.5 ¾ 0 0.1 ¾ 0.1 4.5 ¾ ¾ 0.36 ¾ 0.44 5.5 ー ー ±0.25 ー ±2.50 mA Output voltage Low level VIN = VIH or VIL V V 3-state output off-state current IOZ Input leakage current IN VIN = 5.5 V or GND 0~5.5 ¾ ¾ ±0.1 ¾ ±1.0 mA ICC VIN = VCC or GND 5.5 ¾ ¾ 4.0 ¾ 40.0 mA 5.5 ¾ ¾ 1.35 ¾ 1.50 mA 0 ¾ ¾ 0.5 ¾ 5.0 mA Quiescent supply current ICCT Output leakage current IOPD VOUT = VCC or GND Per input: VIN = 3.4 V Other input: VCC or GND VOUT = 5.5 V AC Characteristics (Input: tr = tf = 3 ns) Characteristics Symbol Ta = 25°C Test Condition VCC (V) Propagation delay time Ta = -40~85°C CL (pF) Min Typ. Max Min Max 15 ¾ 5.6 7.8 1.0 9.0 50 ¾ 6.1 8.8 1.0 10.0 15 ¾ 5.4 7.4 1.0 8.5 50 ¾ 5.9 8.4 1.0 9.5 15 ¾ 7.7 10.4 1.0 12.0 50 ¾ 8.2 11.4 1.0 13.0 Unit tpLH tpHL ¾ tpLH tpHL ¾ 5.0 ± 0.5 tpZL tpZH RL = 1 kW 5.0 ± 0.5 3-state output disable time tpLZ tpHZ RL = 1 kW 5.0 ± 0.5 50 ¾ 8.8 11.4 1.0 13.0 ns Output to output skew tosLH tosHL (Note6) 5.0 ± 0.5 50 ¾ ¾ 1.0 ¾ 1.0 ns (TC7MET240AFK) Propagation delay time (TC7MET244AFK) 3-state output enable time Input capacitance Output capacitance Power dissipation capacitance (Note7) 5.0 ± 0.5 ns ns ns CIN ¾ ¾ 4 10 ¾ 10 pF COUT ¾ ¾ 9 ¾ ¾ ¾ pF TC7MET240AFK ¾ 19 ¾ ¾ ¾ TC7MET244AFK ¾ 18 ¾ ¾ ¾ CPD pF Note6: Parameter guaranteed by design. tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn| Note7: 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/8 (per bit) 4 2001-09-12 TC7MET240,244AFK Noise Characteristics (Input: tr = tf = 3 ns) Characteristics Symbol Ta = 25°C Test Condition VCC (V) Typ. Limit Unit Quiet output maximum dynamic VOL VOLP CL = 50 pF 5.0 0.8 1.0 V Quiet output minimum dynamic VOL VOLV CL = 50 pF 5.0 -0.8 -1.0 V Minimum high level dynamic input voltage VIH VIHD CL = 50 pF 5.0 ¾ 2.0 V Maximum high level dynamic input voltage VIL VILD CL = 50 pF 5.0 ¾ 0.8 V 5 2001-09-12 TC7MET240,244AFK Package Dimensions Weight: 0.03 g (typ.) 6 2001-09-12 TC7MET240,244AFK 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