M74HCT540 |
RFQ for M74HCT540 Required Field |
 |
| Technical/Catalog Information | M74HCT540B1R |
| Vendor | STMicroelectronics |
| Category | Integrated Circuits (ICs) |
| Logic Type | Line Driver, Inverting |
| Package / Case | 20-DIP (300 mil) |
| Packaging | Tube |
| Mounting Type | Through Hole |
| Number of Bits per Element | 8 |
| Number of Elements | 1 - Single |
| Operating Temperature | -55°C ~ 125°C |
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Current - Output High, Low | 6mA, 6mA |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | M74HCT540B1R M74HCT540B1R 497 1914 5 ND 49719145ND 497-1914-5 |
| Product | Manufacturers | Pack | D/C |
| M74HCT540 | - | - | 00 |
The M54/74HCT540 and HCT541 are high speed CMOS OCTAL BUS BUFFERS (3-STATE) fabricated in silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. The HCT540 is an inverting buffer and HCT541 is a non inverting buffer.
The 3 STATE control gate operates as a two input AND such that if either G1 and G2 are high, all eight outputs are in the high impedance state. In order to enhance PC board layout, the HCT540 and HCT541 offers a pinout having inputs and outputs on opposite sides of the package. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
This integrated circuit has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replacements for LSTTL devices giving a reduction of power consumption.
IT IS PROHIBITED TO APPLY A SIGNAL TO BUS TERMINAL WHEN IT IS IN OUTPUT MODE. WHEN A BUS TERMINAL IS FLOATING (HIGH IMPEDANCE STATE) IT IS REQUESTED TO FIX THE INPUT LEVEL BY MEANS OF EXTERNAL PULL DOWN OR PULL UP RESISTOR.
Features |
| `HIGH SPEED fMAX = 60 MHz (TYP.) AT VCC = 5 V `LOWPOWER DISSIPATION ICC = 4 A (MAX.) AT TA = 25 °C `COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) ` OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS `SYMMETRICAL OUTPUT IMPEDANCE |IOH|= IOL = 6 mA (MIN.) ` BALANCEDPROPAGATION DELAYS tPLH = tPHL` PIN AND FUNCTION COMPATIBLE WITH 54/74LS540/541 |
|
Symbol |
Parameter |
Value |
Unit |
|
VCC |
Supply Voltage |
-0.5 to +7 |
V |
|
VI |
DC Input Voltage |
-0.5 to VCC + 0.5 |
V |
|
VO |
DC Output Voltage |
-0.5 to VCC + 0.5 |
V |
|
IIK |
DC Input Diode Current |
± 20 |
mA |
|
IOK |
DC Output Diode Current |
± 20 |
mA |
|
IO |
DC Output Source Sink Current Per Output Pin |
± 35 |
mA |
|
ICC or IGND |
DC VCC or Ground Current |
± 70 |
mA |
|
PD |
Power Dissipation |
500 (*) |
mW |
|
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