m5474hct640 STMicroelectronics, m5474hct640 Datasheet

m5474hct640

Manufacturer Part Number

m5474hct640

Description

Octal Transceiver 3-state Hct245 Inverting Hct640 Inverting, Hct643 Inverting/non Inverting

Manufacturer

STMicroelectronics

Datasheet

1.M5474HCT640.pdf (11 pages)

Current page: 1 of 11
Download datasheet (265Kb)

DESCRIPTION

The M54/74HCT245, HCT640 and HCT643 utilise

silicon gate C

speeds eqivalent to LSTTL devices.

Along with the low power dissipation and high noise

immunity of standad CMOS integrated circuit, it

possesses the capability to drive 15 LSTTL loads.

These IC’s are intended for two-way asynchronous

communication between data buses, and the

direction of data trasmission is determined by DIR

input. The enable input (G) can be used to disable

the device so that the buses are effectively isolated.

All input are equipped with protection circuits

against static discharge and transient discharge.

These integrated circuits have input and output

PIN CONNECTION (top view)

October 1993

OCTAL BUS TRANSCEIVER (3-STATE): HCT245 NON INVERTING

HIGH SPEED

LOW POWER DISSIPATION

COMPATIBLE WITH TTL OUTPUTS

OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

BALANCED PROPAGATION DELAYS

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS245/640/643

PLH

= 10 ns (TYP.) at V

= 4 A (MAX.) at T

= 2V (MIN.) V

| = I

= t

HCT245

PHL

HCT640 INVERTING, HCT643 INVERTING/NON INVERTING

= 6 mA (MIN)

MOS technology to achive operating

= 0.8V (MAX.)

= 25

= 5V

HCT640

M54/74HCT245/640/643

characteristics that are fully compatible with 54/74

LSTTL logic families. M54/74HCT devices are

designed to directly interface HSC

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 A

BUS TERMINAL WHEN IT IS IN OUTPUT MODE

AND WHEN A BUS THERMINAL IS FLOATING

(HIGH IMPEDANCE STATE), IT IS REQUESTED

TO FIX THE INPUT LEVEL BY MEANS OF

EXTERNAL

RESISTOR.

(Plastic Package)

(Micro Package)

M54HCTXXXF1R

M74HCTXXXB1R

HCT643

M1R

B1R

PULL

ORDER CODES :

DOWN

M74HCTXXXM1R

M74HCTXXXC1R

(Ceramic Package)

(Chip Carrier)

C1R

F1R

MOS systems

PULL

1/11

Related parts for m5474hct640

m5474hct640 Summary of contents

Page 1

OCTAL BUS TRANSCEIVER (3-STATE): HCT245 NON INVERTING HCT640 INVERTING, HCT643 INVERTING/NON INVERTING . HIGH SPEED . (TYP LOW POWER DISSIPATION . (MAX ...

Page 2

M54/M74HCT245/640/643 INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOLS HCT245 TRUTH TABLE INPUT G DIR A BUS L L OUTPUT ”H” or ”L” Z: High impedance 2/11 PIN DESCRIPTION PIN No SYMBOL ...

LOGIC DIAGRAM (HCT640) NOTE: IN CASE OF HCT245 OR HCT643, INPUT INVERTERS MARKED BUS AND B BUS ARE ELIMINATED RESPECTIVELY ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage Input Voltage Output Voltage ...

Page 4

M54/M74HCT245/640/643 RECOMMENDED OPERATING CONDITIONS Symbol Parameter V Supply Voltage CC V Input Voltage I V Output Voltage O T Operating Temperature: M54HC Series op M74HC Series Input Rise and Fall Time ( SPECIFICATIONS Test ...

Page 5

AC ELECTRICAL CHARACTERISTICS (C Test Conditions Symbol Parameter V CC (V) (pF) t Output Transition 4.5 TLH t Time THL t Propagation 4.5 PLH t Delay Time PHL 4.5 150 t Output Enable 4.5 PZL t Time PZH 4.5 150 ...

Page 6

M54/M74HCT245/640/643 TEST CIRCUIT I (Opr.) CC 6/11 C CALCULATION calculated with the following PD formula by using the measured value of I (Opr.) in the test circuit opposite. I Opr . ...

Page 7

Plastic DIP20 (0.25) MECHANICAL DATA mm DIM. MIN. TYP. a1 0.254 B 1.39 b 0. 8.5 e 2.54 e3 22. 3.3 Z M54/M74HCT245/640/643 inch MAX. MIN. TYP. 0.010 1.65 0.055 0.018 0.010 25.4 ...

Page 8

M54/M74HCT245/640/643 Ceramic DIP20 MECHANICAL DATA DIM. MIN 0 2.29 G 0.4 I 1.27 L 0. 7.9 Q 8/11 mm TYP. MAX. MIN. 25 7.8 3.3 1.78 0.020 22.86 2.79 0.090 ...

Page 9

SO20 MECHANICAL DATA mm DIM. MIN. TYP 0. 0.35 b1 0. 12.60 E 10.00 e 1.27 e3 11.43 F 7. M54/M74HCT245/640/643 inch MAX. MIN. TYP. 2.65 0.20 0.004 ...

Page 10

M54/M74HCT245/640/643 PLCC20 MECHANICAL DATA DIM. MIN. A 9.78 B 8. 10/11 mm TYP. MAX. MIN. 10.03 0.385 9.04 0.350 4.57 0.165 2.54 0.56 8.38 0.290 1.27 5.08 0.38 ...

Page 11

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its ...

Related keywords

m5474hct640 datasheet
m5474hct640 data sheet
m5474hct640 pdf datasheet
m5474hct640 component
m5474hct640 part
m5474hct640 distributor
m5474hct640 RoHS
m5474hct640 datasheet download