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PDF TC74VHCT245AFT Data sheet ( Hoja de datos )
| Número de pieza | TC74VHCT245AFT | |
| Descripción | OCTAL BUS TRANSCEIVER | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TC74VHCT245AF/AFW/AFT/AFK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHCT245AF,TC74VHCT245AFW,TC74VHCT245AFT,TC74VHCT245AFK
Octal Bus Transceiver
The TC74VHCT245A is an advanced high speed CMOS OCTAL
BUS TRANSCEIVER fabricated with silicon gate C2MOS
technology. It achieves the high speed operation similar to
equivalent Bipolar Schottky TTL while maintaining the CMOS
low power dissipation.
It is intended for two-way asynchronous communication
between data busses. The direction of data transmission is
determined by the level of the DIR input.
The enable input ( G ) can be used to disable the device so that
the busses are effectively isolated.
The input voltage are compatible with TTL output voltage.
This device 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 (Note) 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.
Note: Output in off-state
Features (Note)
• High speed: tpd = 4.9 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 µA (max) at 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 = 1.6 V (max)
• Pin and function compatible with the 74 series
(74AC/HC/F/ALS/LS etc.) 245 type.
Note:
Do not apply a signal to any bus terminal when it is in
the output mode. Damage may result.
All floating (high impedance) bus terminals must have
their input levels fixed by means of pull up or pull down
resistors.
Note: xxxFW (JEDEC SOP) is not available in
Japan.
TC74VHCT245AF
TC74VHCT245AFW
TC74VHCT245AFT
TC74VHCT245AFK
Weight
SOP20-P-300-1.27A
: 0.22 g (typ.)
SOP20-P-300-1.27
: 0.22 g (typ.)
SOL20-P-300-1.27
: 0.46 g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)
1 2006-06-01
1 page  
TC74VHCT245AF/AFW/AFT/AFK
Noise Characteristics (input: tr = tf = 3 ns) (Note)
Characteristics
Symbol
Test Condition
Quiet output maximum dynamic VOL
Quiet output minimum dynamic VOL
Minimum high level dynamic input
voltage
Maximum low level dynamic input
voltage
VOLP
CL = 50 pF
VOLV
CL = 50 pF
VIHD
VILD
CL = 50 pF
CL = 50 pF
VCC (V)
5.0
5.0
Ta = 25°C
Typ. Limit
1.1 1.5
(1.2) (1.6)
−1.1 −1.5
(−1.2) (−1.6)
Unit
V
V
5.0
⎯ 2.0
V
5.0
⎯ 0.8
V
Note: The value in ( ) only applies to JEDEC SOP (FW) devices.
5 2006-06-01
5 Page 
TC74VHCT245AF/AFW/AFT/AFK
Note: Lead (Pb)-Free Packages
SOP20-P-300-1.27A TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50
RESTRICTIONS ON PRODUCT USE
• The information contained herein is subject to change without notice. 021023_D
060116EBA
• 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. 021023_A
• 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. 021023_B
• 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. 060106_Q
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others. 021023_C
• The products described in this document are subject to the foreign exchange and foreign trade laws. 021023_E
11 2006-06-01
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TC74VHCT245AFT.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TC74VHCT245AF | OCTAL BUS TRANSCEIVER | Toshiba |
| TC74VHCT245AFK | OCTAL BUS TRANSCEIVER | Toshiba |
| TC74VHCT245AFT | OCTAL BUS TRANSCEIVER | Toshiba |
| TC74VHCT245AFW | OCTAL BUS TRANSCEIVER | Toshiba |
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