74LCX245TTR STMicroelectronics, 74LCX245TTR Datasheet

IC BUS TRANSCVR 3-ST 8B 20TSSOP

74LCX245TTR

Manufacturer Part Number
74LCX245TTR
Description
IC BUS TRANSCVR 3-ST 8B 20TSSOP
Manufacturer
STMicroelectronics
Series
74LCXr
Datasheet

Specifications of 74LCX245TTR

Logic Type
Transceiver, Non-Inverting
Number Of Elements
1
Number Of Bits Per Element
8
Current - Output High, Low
24mA, 24mA
Voltage - Supply
2 V ~ 3.6 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Dc
9948
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6650-2
74LCX245TTR

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Part Number:
74LCX245TTR
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Quantity:
14 000
Part Number:
74LCX245TTR
Manufacturer:
ST
Quantity:
20 000
DESCRIPTION
The 74LCX245 is a low voltage CMOS OCTAL
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C
and high speed 3.3V applications; it can be
interfaced to 5V signal environment for both inputs
and outputs.
Figure 1: Pin Connection And IEC Logic Symbols
September 2004
5V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
t
POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
PCI BUS LEVELS GUARANTEED AT 24 mA
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
PD
PLH
OH
CC
= 7.0 ns (MAX.) at V
| = I
(OPR) = 2.0V to 3.6V (1.5V Data
2
(3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
MOS technology. It is ideal for low power
t
PHL
OL
= 24mA (MIN) at V
LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER
CC
= 3V
CC
= 3V
Table 1: Order Codes
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
This IC is intended for two way asynchronous
communication between data buses; the direction
of data transmission is determined by DIR input.
The enable input G can be used to disable the
device so that the buses 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.
PACKAGE
TSSOP
SOP
SOP
74LCX245
Rev. 4
74LCX245MTR
74LCX245TTR
TSSOP
T & R
1/13

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74LCX245TTR Summary of contents

Page 1

... 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. 74LCX245 SOP TSSOP PACKAGE T & R SOP 74LCX245MTR TSSOP 74LCX245TTR Rev. 4 1/13 ...

Page 2

Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN N° 18, 17, 16, 15, 14, 13, 12 Table 3: Truth Table INPUTS G ...

Page 3

Table 4: Absolute Maximum Ratings Symbol V Supply Voltage Input Voltage Output Voltage (OFF State Output Voltage (High or Low State) (note Input Diode Current IK I ...

Page 4

Table 6: DC Specifications Symbol Parameter 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 Power Off Leakage ...

Page 5

Table 8: AC Electrical Characteristics Symbol Parameter t t Propagation Delay PLH PHL Time t t Output Enable Time PZL PZH t t Output Disable Time PLZ PHZ t Output To Output OSLH Skew Time (note1, t OSHL 2) 1) ...

Page 6

Figure 3: Test Circuit PLH PHL PZL PLZ PZH PHZ equivalent (includes jig and probe capacitance 500 or equivalent L ...

Page 7

Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 74LCX245 7/13 ...

Page 8

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 8/13 SO-20 MECHANICAL DATA mm. TYP MAX. 2.65 0.30 0.51 0.32 13.00 7.6 1.27 10.65 ...

Page 9

TSSOP20 MECHANICAL DATA DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 6.4 E 6 0˚ PIN 1 IDENTIFICATION 1 mm. TYP MAX. 1.2 0.15 1 1.05 ...

Page 10

DIM. MIN 12 10.8 Bo 13.2 Ko 3.1 Po 3.9 P 11.9 10/13 Tape & Reel SO-20 MECHANICAL DATA mm. TYP MAX. 330 13.2 30.4 11 13.4 3.3 4.1 12.1 inch ...

Page 11

Tape & Reel TSSOP20 MECHANICAL DATA DIM. MIN 12 6.8 Bo 6.9 Ko 1.7 Po 3.9 P 11.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 7 0.268 7.1 0.272 1.9 ...

Page 12

Table 10: Revision History Date Revision 15-Sep-2004 4 12/13 Description of Changes Ordering Codes Revision - pag. 1. ...

Page 13

... 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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