74VHC245TTR STMicroelectronics, 74VHC245TTR Datasheet

IC BUS TRANSCVR 3-ST 8B 20TSSOP

74VHC245TTR

Manufacturer Part Number
74VHC245TTR
Description
IC BUS TRANSCVR 3-ST 8B 20TSSOP
Manufacturer
STMicroelectronics
Series
74VHCr
Datasheet

Specifications of 74VHC245TTR

Logic Type
Transceiver, Non-Inverting
Number Of Elements
1
Number Of Bits Per Element
8
Current - Output High, Low
8mA, 8mA
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-7135-2
74VHC245TTR
DESCRIPTION
The 74VHC245 is an advanced high-speed
CMOS OCTAL BUS TRANSCEIVER (3-STATE)
fabricated with sub-micron silicon gate and
double-layer metal wiring C
This IC is intended for two-way asynchronous
communication
Figure 1: Pin Connection And IEC Logic Symbols
November 2004
HIGH SPEED: t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
POWER DOWN PROTECTION ON
CONTROL INPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
IMPROVED LATCH-UP IMMUNITY
LOW NOISE: V
CC
PLH
OH
NIH
CC
= 4 A (MAX.) at T
| = I
(OPR) = 2V to 5.5V
= V
t
PHL
OL
NIL
= 8 mA (MIN)
= 28% V
between
OLP
PD
= 4.0 ns (TYP.) at V
= 0.9V (MAX.)
CC
A
=25°C
(MIN.)
2
MOS technology.
data
busses;
CC
= 5V
the
Table 1: Order Codes
direction of data transmission is determined by
DIR input. The enable input G can be used to
disable the device so that the busses are
effectively isolated.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
TRANSCEIVER (3-STATE)
PACKAGE
TSSOP
SOP
SOP
74VHC245
OCTAL BUS
Rev. 6
74VHC245MTR
74VHC245TTR
TSSOP
T & R
1/12

Related parts for 74VHC245TTR

74VHC245TTR Summary of contents

Page 1

... ESD immunity and transient excess voltage. MOS technology. All floating bus terminals during High Z State must be held HIGH or LOW. data busses; the 74VHC245 OCTAL BUS TRANSCEIVER (3-STATE) SOP TSSOP PACKAGE SOP 74VHC245MTR TSSOP 74VHC245TTR Rev & R 1/12 ...

Page 2

Figure 2: Input Equivalent Circuit Table 3: Truth Table INPUTS Don‘t Care Z : High Impedance Table 4: Absolute Maximum Ratings Symbol V Supply Voltage Input Voltage (DIR ...

Page 3

Table 6: DC Specifications Symbol Parameter V High Level Input IH Voltage 3 Low Level Input IL Voltage 3 High Level Output OH Voltage V Low Level Output OL Voltage I High Impedance OZ Output Leakage ...

Page 4

Table 7: AC Electrical Characteristics (Input t Symbol Parameter t Propagation Delay 3.3 PLH Time t PHL 3.3 5.0 5.0 t Output Disable 3.3 PZL Time t PZH 3.3 5.0 5.0 t 3.3 PLZ Output Enable t Time PHZ ...

Page 5

Table 9: Dynamic Switching Characteristics Symbol Parameter V Dynamic Low OLP Voltage Quiet V OLV Output (note 1, 2) Dynamic High V Voltage Input IHD (note 1, 3) Dynamic Low V Voltage Input ILD (note Worst case ...

Page 6

Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 6/12 ...

Page 7

SO-20 MECHANICAL DATA DIM. MIN. A 2.35 A1 0.1 B 0.33 C 0.23 D 12. 10.00 h 0.25 L 0.4 k 0° ddd mm. TYP MAX. 2.65 0.093 0.30 0.004 0.51 0.013 0.32 0.009 13.00 0.496 ...

Page 8

DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 6.4 E 6 0˚ PIN 1 IDENTIFICATION 1 8/12 TSSOP20 MECHANICAL DATA mm. TYP MAX. 1.2 0.15 ...

Page 9

Tape & Reel SO-20 MECHANICAL DATA DIM. MIN 12 10.8 Bo 13.2 Ko 3.1 Po 3.9 P 11.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 30.4 11 0.425 13.4 0.520 3.3 ...

Page 10

Tape & Reel TSSOP20 MECHANICAL DATA DIM. MIN 12 6.8 Bo 6.9 Ko 1.7 Po 3.9 P 11.9 10/12 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 7 0.268 7.1 ...

Page 11

Table 10: Revision History Date Revision 12-Nov-2004 6 Description of Changes Order Codes Revision - pag. 1. 74VHC245 11/12 ...

Page 12

... 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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

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