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TC7MH240,244FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MH240FK, TC7MH244FK
Octal Bus Buffer TC7MH240FK Inverted, 3-State Outputs TC7MH244FK Non-Inverted, 3-State Outputs
The TC7MH240FK and TC7MH244FK 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 TC7MH240FK is an inverting 3-state buffer having two Weight: 0.03 g (typ.) active-low output enables. The TC7MH244FK 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 address drivers, etc. An input protection circuit ensures that 0 to 7 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
Features
* * * * * * * * High speed: tpd = 3.9 ns (typ.) (VCC = 5 V) Low power dissipation: ICC = 4 A (max) (Ta = 25C) High noise immunity: VNIH = VNIL = 28% VCC (min) Power down protection is provided on all inputs. Balanced propagation delays: tpLH tpHL - Wide operating voltage range: VCC (opr) = 2~5.5 V Low noise: VOLP = 0.8 (max) Pin and function compatible with 74ALS240/244
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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TC7MH240,244FK
Pin Assignment (top view)
TC7MH240FK
1G
TC7MH244FK 20 19 18 17 16 15 14 13 12 11 VCC
2G 1G
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
2G
1A1 2Y 4 1A2
2Y3
1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1
1Y1 2A4 1Y 2 2A3
1Y 3
1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
1A3 2Y 2 1A4 2 Y1
2A2 1Y 4 2A1
GND 10
GND 10
IEC Logic Symbol
TC7MH240FK 1G 1A1 1A2 1A3 1A4 (1) (2) (4) (6) (8) EN (18) (16) (14) (12) 1Y1 1Y 2 1Y 3 1Y 4
1G
TC7MH244FK (1) (2) (4) (6) (8) EN (18) (16) (14) (12) 1Y1 1Y2 1Y3 1Y4
1A1 1A2 1A3 1A4
2G 2A1 2A2 2A3 2A4
(19) (11) (13) (15) (17)
EN (9) (7) (5) (3) 2 Y1 2Y 2 2Y3 2Y 4
2G 2A1 2A2 2A3 2A4
(19) (11) (13) (15) (17)
EN (9) (7) (5) (3) 2Y1 2Y2 2Y3 2Y4
Truth Table
Inputs
G
Outputs An L H X Yn L H Z
Yn
H L Z
L L H
X Z
: Don't care : High impedance
Yn : TC7MH244FK Y n : TC7MH240FK
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TC7MH240,244FK
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~VCC + 0.5 -20 20 25 75 180 -65~150 Unit V V V mA mA mA mA mW C
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 2.0~5.5 0~5.5 0~VCC -40~85 0~100 (VCC = 3.3 0.3 V) 0~20 (VCC = 5 0.5 V) Unit V V V C ns/V
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TC7MH240,244FK
Electrical Characteristics DC Characteristics
Characteristics Symbol Test Condition VCC (V) 2.0 High level Input voltage 2.0 Low level VIL 3.0~5.5 2.0 VIN = VIH or VIL IOH = -50 A 3.0 4.5 IOH = -4 mA Output voltage IOH = -8 mA IOL = 50 A IOL = 4 mA IOL = 8 mA 3-state output off-state current Input leakage current Quiescent supply current IOZ IIN ICC VIN = VIH or VIL VOUT = VCC or GND VIN = 5.5 V or GND VIN = VCC or GND 3.0 4.5 2.0 3.0 4.5 3.0 4.5 5.5 0~5.5 5.5 VIN = VIH or VIL VIH 3.0~5.5 Min 1.50 VCC x 0.7 1.9 2.9 4.4 2.58 3.94 Ta = 25C Typ. 2.0 3.0 4.5 0 0 0 Max 0.50 VCC x 0.3 0.1 0.1 0.1 0.36 0.36 0.25 0.1 4.0 Ta = -40~85C Min 1.50 VCC x 0.7 1.9 2.9 4.4 2.48 3.80 Max V 0.50 VCC x 0.3 0.1 0.1 0.1 0.44 0.44 2.50 1.0 40.0 A A A V Unit
High level
VOH
Low level
VOL
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TC7MH240,244FK
AC Characteristics (Input: tr = tf = 3 ns)
Characteristics Symbol Test Condition VCC (V) CL (pF) 3.3 0.3 tpLH tpHL 5.0 0.5 15 50 15 50 15 50 15 50 15 50 15 50 50 50 50 50 Min Ta = 25C Typ. 5.3 7.8 3.6 5.1 5.8 8.3 3.9 5.4 6.6 9.1 4.7 6.2 10.3 6.7 4 6 17 19 Max 7.5 11.0 5.5 7.5 8.4 11.9 5.5 7.5 10.6 14.1 7.3 9.3 14.0 9.2 1.5 1.0 10 Ta = -40~85C Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max 9.0 12.5 6.5 8.5 10.0 13.5 6.5 8.5 12.5 16.0 8.5 10.5 16.0 10.5 1.5 1.0 10 pF pF pF ns ns ns ns ns Unit
Propagation delay time (TC7MH240FK)
Propagation delay time (TC7MH244FK)
3.3 0.3 tpLH tpHL 5.0 0.5
3.3 0.3 3-state output enable time tpZL tpZH RL = 1 k 5.0 0.5 tpLZ tpHZ tosLH tosHL CIN COUT CPD TC7MH240FK TC7MH244FK 3.3 0.3 5.0 0.5 (Note1) 3.3 0.3 5.0 0.5
3-state output disable time
RL = 1 k
Output to output skew Input capacitance Output capacitance Power dissipation capacitance (Note2)

Note1: Parameter guaranteed by design. tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn| Note2: 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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TC7MH240,244FK
Noise Characteristics (Input: tr = tf = 3 ns)
Characteristics Quiet output maximum dynamic VOL Quiet output minimum dymnamic VOL Minimum high level dynamic input voltage VIH Maximum low level dynamic input voltage 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. 0.5 -0.5 Limit 0.8 -0.8 3.5 1.5 V V V V Unit
Input Equivalent Circuit
Input
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TC7MH240,244FK
Package Dimensions
Weight: 0.03 g (typ.)
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