M74HC245M1R STMicroelectronics, M74HC245M1R Datasheet

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M74HC245M1R

Manufacturer Part Number
M74HC245M1R
Description
Manufacturer
STMicroelectronics
Datasheet
DESCRIPTION
The M74HC245 is an advanced high-speed
CMOS OCTAL BUS TRANSCEIVER (3-STATE)
fabricated with silicon gate C
This IC is intended for two-way asynchronous
communication between data buses, and the
direction of data transmission is determined by
DIR input. The enable input G can be used to
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
HIGH SPEED:
t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
WIDE OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
PD
CC
PLH
OH
NIH
CC
= 10ns (TYP.) at V
= 4 A(MAX.) at T
| = I
(OPR) = 2V to 6V
= V
t
PHL
OL
NIL
= 6mA (MIN)
= 28 % V
A
CC
CC
=25°C
(MIN.)
= 6V
2
WITH 3 STATE OUTPUTS (NON INVERTED)
MOS technology.
ORDER CODES
disable the device so that the buses are effectively
isolated.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
PACKAGE
OCTAL BUS TRANSCEIVER
TSSOP
SOP
DIP
DIP
M74HC245M1R
M74HC245B1R
TUBE
SOP
M74HC245
M74HC245RM13TR
M74HC245TTR
T & R
TSSOP
1/10

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M74HC245M1R Summary of contents

Page 1

... MOS technology. All inputs are equipped with protection circuits against static discharge and transient excess voltage. All floating bus terminals during High Z State must be held HIGH or LOW. M74HC245 DIP SOP TUBE T & R M74HC245B1R M74HC245M1R M74HC245RM13TR M74HC245TTR TSSOP 1/10 ...

Page 2

M74HC245 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS G DIR Don’t Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage Input Voltage Output Voltage O ...

Page 3

DC SPECIFICATIONS Symbol Parameter V V High Level Input IH Voltage V Low Level Input IL Voltage V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage I Current I High Impedance OZ Output Leakage ...

Page 4

M74HC245 AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter Output Transition TLH THL Time t t Propagation Delay PLH PHL Time t t High Impedance PZL PZH Output Enable Time t t High Impedance PLZ PHZ Output Disable Time ...

Page 5

TEST CIRCUIT PLH PHL PZL PLZ PZH PHZ C = 50pF/150pF or equivalent (includes jig and probe capacitance equivalent pulse generator ...

Page 6

M74HC245 WAVEFORM 2 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 6/10 ...

Page 7

Plastic DIP-20 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 0.254 B 1. 22. TYP MAX. MIN. 0.010 1.65 0.055 0.45 0.25 25.4 8.5 2.54 7.1 3.93 3.3 1.34 M74HC245 inch ...

Page 8

M74HC245 DIM. MIN 0 0. 12.60 E 10. 7. 8/10 SO-20 MECHANICAL DATA mm. TYP MAX. 2.65 0.2 2.45 0.49 0.32 0.5 45° (typ.) ...

Page 9

TSSOP20 MECHANICAL DATA DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 6.4 E 6.2 E1 4.3 e 0.65 BSC K 0° PIN 1 IDENTIFICATION 1 mm. TYP MAX. MIN. 1.2 ...

Page 10

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

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