74lvxc4245 STMicroelectronics, 74lvxc4245 Datasheet

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74lvxc4245

Manufacturer Part Number
74lvxc4245
Description
Octal Dual Supply Bus Transceiver
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
The 74LVXC4245 is a dual supply 8 bit
configurable low voltage CMOS OCTAL BUS
TRANSCEIVER fabricated with sub-micron silicon
gate and double-layer metal wiring C
technology. Designed for use as an interface
between a 5V bus and a 3.3V to 5V bus in a mixed
5V/3.3V supply systems, it achieves high speed
operation while maintaining the CMOS low power
dissipation.
Figure 1: Pin Connection And IEC Logic Symbols
August 2004
HIGH SPEED:
t
V
LOW POWER DISSIPATION:
I
LOW NOISE: V
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES C4245
IMPROVED LATCH-UP IMMUNITY
PD
CCA
PLH
OH
CCA
CCA
CCA
CCB
= 6.5ns (MAX.) at
| = I
= I
=5.0V V
(OPR) = 4.5V to 5.5V (1.2V Data Retention)
(OPR) = 2.7V to 5.5V (1.2V Data Retention)
= 5.0V, V
t
PHL
CCB
OL
= 24mA (MIN)
= 5 A(MAX.) at T
CCB
CCB
OLP
=3.3V
= 5.0V
=0.3V (TYP.) at
OCTAL DUAL SUPPLY BUS TRANSCEIVER
A
=25°C
2
MOS
Table 1: Order Codes
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
disable the device so that the buses are effectively
isolated.
The A-port interfaces with the 5V bus, the B-port
with the 3.3V to 5V bus.
All inputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
PACKAGE
TSSOP
SOP
SOP
74LVXC4245
74LVXC4245MTR
74LVXC4245TTR
Rev. 4
TSSOP
T & R
1/14

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74lvxc4245 Summary of contents

Page 1

... CCB PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C4245 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74LVXC4245 is a dual supply 8 bit configurable low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C technology. Designed for use as an interface between a 5V bus and a 3. bus in a mixed 5V/3 ...

Page 2

... Figure 2: Input And Output Equivalent Circuit Table 3: Truth Table INPUTS Don’t Care Z : High Impedance Table 4: Absolute maximum ratings Symbol V Supply Voltage CCA V Supply Voltage CCB V DC Input Voltage I/O Voltage I/ I/O Voltage I/ Input Diode Current Output Diode Current ...

Page 3

... CCB GND Open CCA GND G= DIR = V CCA V = Open IB 5 2.1V IA CCA CCB GND 74LVXC4245 Value 4.5 to 5.5 2 CCA CCA CCB - Value = 25 °C - °C -55 to 125°C Typ. Max. Min. Max. Min. 2.0 2.0 2.0 2.0 2.0 2.0 ...

Page 4

... Table 7: DC Specifications For V Symbol Parameter V CCA (V) V High Level Input 4.5 IHB Voltage 4.5 4.5 V Low Level Input 4.5 ILB Voltage 4.5 4.5 V High Level 4.5 OHB Output Voltage 4.5 4.5 4.5 4.5 4.5 V Low Level Output 4.5 OLB Voltage 4.5 4.5 4.5 4.5 I Input Leakage IB 5.5 Current I High Impedance 5.5 OZB Output Leakage Current I Quiescent Supply 5.5 CCtB ...

Page 5

... Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching threshold ( 1MHz IHD Test Condition CCB (V) Min. 3.3 3.3 -1.2 3.3 3.3 -0.8 3.3 3.3 0.8 3.3 3.3 0.8 74LVXC4245 Value = 25 °C - °C -55 to 125°C Typ. Max. Min. Max. Min. 1.0 1.5 -0.6 0.8 1.2 -0 threshold ILD Unit Max ...

Page 6

... Table 9: AC Electrical Characteristics (C Symbol Parameter V t Propagation Delay 2.7 to PLH Time (An to Bn) 5.0 t Propagation Delay 2.7 to PHL Time (An to Bn) 5.0 t Output Enable 2.7 to PZL Time (G to Bn) 5.0 t Output Enable 2.7 to PZH Time (G to Bn) 5.0 t Output Disable 2.7 to PLZ Time (G to Bn) 5.0 t Output Disable 2.7 to PHZ Time (G to Bn) 5 ...

Page 7

... 500 or equivalent pulse generator (typically OUT Test Condition CCB (V) Min. 3.3 3.3 3.3 TEST 74LVXC4245 Value = 25 °C - °C -55 to 125°C Typ. Max. Min. Max. Min. 4 (per circuit) CC(opr ...

Page 8

... Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 8/14 ...

Page 9

... MIN. A 2.35 A1 0.1 B 0.33 C 0.23 D 15. 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 15.60 0.598 7.6 0.291 1.27 10.65 0.394 0.75 0.010 1.27 0.016 8° 0.100 74LVXC4245 inch MIN. TYP. 0.050 0° 0070769C MAX. 0.104 0.012 0.020 0.013 0.614 0.299 0.419 0.030 0.050 8° 0.004 9/14 ...

Page 10

... DIM. MIN 0. 0.19 c 0.09 D 7 6.25 K 0° PIN 1 IDENTIFICATION 1 10/14 TSSOP24 MECHANICAL DATA mm. TYP MAX. 1.1 0.15 0.9 0.30 0.20 7.9 4.5 0.65 BSC 6.5 8° 0. inch MIN. TYP. 0.002 0.035 0.0075 0.0035 0.303 0.169 0.0256 BSC 0.246 0° 0.020 7047476B MAX. 0.043 0.006 ...

Page 11

... Tape & Reel SO-24 MECHANICAL DATA DIM. MIN 12 10.8 Bo 15.7 Ko 2.9 Po 3.9 P 11.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 30.4 11.0 0.425 15.9 0.618 3.1 0.114 4.1 0.153 12.1 0.468 74LVXC4245 inch MIN. TYP. MAX. 12.992 0.519 1.197 0.433 0.626 0.122 0.161 0.476 11/14 ...

Page 12

... Tape & Reel TSSOP24 MECHANICAL DATA DIM. MIN 12 6.8 Bo 8.2 Ko 1.7 Po 3.9 P 11.9 12/14 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 7 0.268 8.4 0.323 1.9 0.067 4.1 0.153 12.1 0.468 inch MIN. TYP. MAX. 12.992 0.519 0.882 0.276 0.331 0.075 0.161 0.476 ...

Page 13

... Table 11: Revision History Date Revision 27-Aug-2004 4 Description of Changes Ordering Codes Revision - pag. 1. 74LVXC4245 13/14 ...

Page 14

... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. 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 ...

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