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74LVX3245 数据表(PDF) 1 Page - STMicroelectronics

部件名 74LVX3245
功能描述  OCTAL DUAL SUPPLY BUS TRANSCEIVER
Download  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74LVX3245 数据表(HTML) 1 Page - STMicroelectronics

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August 2004
s
HIGH SPEED:
tPD = 8ns (MAX.) at TA=25°C
VCCA = 3.3V, VCCB = 5.0V
s
LOW POWER DISSIPATION:
ICCA = ICCB = 5µA(MAX.) at TA=25°C
s
LOW NOISE: VOLP =0.3V (TYP.) at VCC =3.3V
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCCA(OPR)= 2.7Vto 3.6V(1.2VData Retention)
VCCB(OPR)= 4.5V to 5.5V (1.2V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 3245
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVX3245 is a dual supply low voltage
CMOS OCTAL BUS TRANSCEIVER fabricated
with sub-micron silicon gate and double-layer
metal wiring C2MOS technology. Designed for use
as an interface between a 5V bus and a 3.3V bus
in a mixed 5V/3.3V supply systems, it achieves
high speed operation while maintaining the CMOS
low power dissipation.
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 3V bus, the B-port
with the 5V bus.
All inputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
74LVX3245
OCTAL DUAL SUPPLY BUS TRANSCEIVER
Figure 1: Pin Connection And IEC Logic Symbols
Table 1: Order Codes
PACKAGE
T & R
SOP
74LVX3245MTR
TSSOP
74LVX3245TTR
TSSOP
SOP
Rev. 4


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