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TC7MET540,541AFK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MET540AFK, TC7MET541AFK
Octal Bus Buffer TC7MET540AFK Inverted, 3-State Outputs TC7MET541AFK Non-Inverted, 3-State Outputs
The TC7MET540AFK and 541AFK 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 TC7MET540AFK is an inverting type and, the TC7MET541AFK is a non-inverting type. Weight: 0.03 g (typ.) When either G1 or G2 are high , the terminal outputs are in the high-impedance state. 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 = 5.4 ns (typ.) (VCC = 5 V) Low power dissipation: ICC = 4 A (max) (Ta = 25C) 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 = 1.5 V (max) Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 540/541 type.
000630EBA1
* 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.
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TC7MET540,541AFK
Pin Assignment (top view)
TC7MET540AFK
G1
TC7MET541AFK 20 19 18 17 16 15 14 13 12 11 VCC
G2 G1
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14 13 12 11
VCC
G2
A1 A2 A3 A4 A5 A6 A7 A8
A1 A2 A3 A4 A5 A6 A7 A8
Y1 Y2
Y3
Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
Y4
Y5 Y6
Y7
Y8
GND 10
GND 10
IEC Logic Symbol
TC7MH540AFK
G1 G2
TC7MH541AFK
G1 G2
(1) (19)
&
EN
(1) (19)
&
EN
A1 A2 A3 A4 A5 A6 A7 A8
(2) (3) (4) (5) (6) (7) (8) (9)
(18) (17) (16) (15) (14) (13) (12) (11)
Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
A1 A2 A3 A4 A5 A6 A7 A8
(2) (3) (4) (5) (6) (7) (8) (9)
(18) (17) (16) (15) (14) (13) (12) (11)
Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
Truth Table
Inputs
G1 G2
Outputs An X X H L Yn Z Z H L
Yn
H X L L
X H L L
Z Z L H
X: Don't care Z: High impedance Yn: TC7MET541AFK
Y n : TC7MET540AFK
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TC7MET540,541AFK
Maximum Ratings
Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT ICC PD Tstg Rating -0.5~7.0 -0.5~7.0 -0.5~7.0 (Note1) Unit V V V mA (Note3) mA mA mA mW C
-0.5~VCC + 0.5 (Note2) -20 20 25 75 180 -65~150
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 Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time Symbol VCC VIN VOUT Topr dt/dv Rating 4.5~5.5 0~5.5 0~5.5 0~VCC -40~85 0~20 (Note4) (Note5) C ns/V Unit V V V
Note4: Output in off-state Note5: High or low state
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TC7MET540,541AFK
Electrical Characteristics DC Characteristics
Characteristics High level low level High level Output voltage low level VOL Symbol VIH VIL VOH Test Condition VCC (V) Input voltage VIN = VIH IOH = -50 A or VIL IOH = -8 mA VIN = VIH IOL = 50 A or VIL IOL = 8 mA VIN = VIH or VIL VOUT = VCC or GND VIN = 5.5 V or GND VIN = VCC or GND Per input: VIN = 3.4 V Other input: VCC or GND VOUT = 5.5 V 0 4.5~5.5 4.5~5.5 4.5 4.5 4.5 4.5 5.5 0~5.5 5.5 5.5 Min 2.0 4.4 3.94 Ta = 25C Typ. 4.5 0 Max 0.8 0.1 0.36 0.25 0.1 4.0 1.35 0.5 Ta = -40~85C Min 2.0 4.4 3.80 Max 0.8 0.1 0.44 2.50 1.0 40.0 1.50 5.0 A A A mA A V V Unit
s-state output off-state current Input leakage current
IOZ IIN ICC
Quiescent supply current ICCT Output leakage current IOPD
AC Electrical Characteristics (Input: tr = tf = 3 ns)
Characteristics Propagation delay time (TC7MET540AFK) Propagation delay time (TC7MET541AFK) 3-state output enable time Symbol tpLH tpHL tpLH tpHL tpZL tpZH 3-state output disable time tpLZ tpHZ Output to output skew Input capacitance Output capacitance Power dissipation capacitance tosLH tosHL CIN COUT CPD Test Condition VCC (V) CL (pF) 5.0 0.5 15 50 5.0 0.5 15 50 15 50 50 Min Ta = 25C Typ. 5.4 5.9 5.0 5.5 8.3 8.8 9.4 Max 7.4 8.4 6.9 7.9 11.3 12.3 11.9 Ta = -40~85C Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max 8.5 9.5 8.0 9.0 13.0 14.0 13.5 ns ns ns ns Unit
RL = 1 k
5.0 0.5
RL = 1 k
5.0 0.5
(Note6) 5.0 0.5
50

4 9 19
1.0 10

1.0 10
ns pF pF pF
(Note7)
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)
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TC7MET540,541AFK
Noise Characteristics (Input: tr = tf = 3 ns)
Characteristics Quiet output maximum dynamic Quiet output minimum dynamic VOL VOL VIH VIL Symbol VOLP VOLV VIHD VILD Test Condition VCC (V) CL = 50 pF CL = 50 pF CL = 50 pF CL = 50 pF 5.0 5.0 5.0 5.0 Ta = 25C Typ. 1.1 -1.1 Limit 1.5 -1.5 2.0 0.8 V V V V Unit
Minimum high level dynamic input voltage Maximum low level dynamic input voltage
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TC7MET540,541AFK
Package Dimensions
Weight: 0.03 g (typ.)
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