74VHC245FT ,74VHC CMOS logic IC seriesabsolute maximum ratings, even briefly, lead to deterioration in IC performance or evendestruction. ..
74VHC245M ,Octal Bidirectional Transceiver with 3-STATE Outputs74VHC245 Octal Bidirectional Transceiver with 3-STATE OutputsNovember 1992Revised March 199974VHC24 ..
74VHC245M ,Octal Bidirectional Transceiver with 3-STATE Outputs74VHC245OCTAL BUSTRANSCEIVER (3-STATE) ■ HIGH SPEED: t = 4.0 ns (TYP.) at V = 5VPD CC■ LOW POWER D ..
74VHC245MTC ,Octal Bidirectional Transceiver with 3-STATE OutputsFeaturesThe VHC245 is an advanced high speed CMOS octal bus High Speed: t = 4.0 ns (typ) at V = 5V ..
74VHC245MTCX ,Octal Bidirectional Transceiver with 3-STATE OutputsFeaturesThe VHC245 is an advanced high speed CMOS octal bus High Speed: t = 4.0 ns (typ) at V = 5V ..
74VHC245MTR ,OCTAL BUS TRANSCEIVER (3-STATE)ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value UnitV Supply Voltage-0.5 to +7.0 VCCV DC Input ..
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74VHC245FT
74VHC CMOS logic IC series
74VHC245FT
CMOS Digital Integrated Circuits Silicon Monolithic
74VHC245FT74VHC245FT74VHC245FT74VHC245FT
1. 1. 1. 1. Functional DescriptionFunctional DescriptionFunctional DescriptionFunctional Description Octal Bus Transceiver
2. 2. 2. 2. GeneralGeneralGeneralGeneral
The 74VHC245 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.
All inputs are equipped with protection circuits against static discharge.
3. 3. 3. 3. Features (Note)Features (Note)Features (Note)Features (Note)
(1) High speed: Propagation delay time = 4.0 ns (typ.) at VCC = 5 V
(2) Low power dissipation: ICC = 4 µA (max) at Ta = 25
(3) High noise immunity: VNIH = VNIL = 28 % VCC (min)
(4) Balanced propagation delays: tPLH ≈ tPHL
(5) Wide operating voltage range: VCC(opr) = 2 V to 5.5 V
(6) Low noise: VOLP = 1.0 V (max)
(7) Pin and function compatible with the 74 series (74AC/HC/AHC 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.
A parasitic diode is formed between the bus and VCC terminals. Therefore bus terminal can not be used to
interface 5 V to 3 V systems directly.
4. 4. 4. 4. PackagingPackagingPackagingPackaging
