74LVX3245M STMICROELECTRONICS [STMicroelectronics], 74LVX3245M Datasheet

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74LVX3245M

Manufacturer Part Number
74LVX3245M
Description
OCTAL DUAL SUPPLY BUS TRANSCEIVER
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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DESCRIPTION
The 74LVX3245 is a dual supply low voltage
CMOS OCTAL BUS TRANSCEIVER fabricated
with sub-micron silicon gate and double-layer
metal wiring C
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.
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
HIGH SPEED :
t
LOW POWER DISSIPATION:
I
LOW NOISE: V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 3245
IMPROVED LATCH-UP IMMUNITY
PD
V
CCA
PLH
OH
CCA
CCB
CCA
= 8ns (MAX.) at T
| = I
= I
(OPR) = 2.7V to 3.6V (1.2V Data Retention)
(OPR) = 4.5V to 5.5V (1.2V Data Retention)
t
= 3.3V V
PHL
CCB
OL
= 24mA (MIN)
2
= 5 A(MAX.) at T
MOS technology. Designed for use
OLP
CCB
=0.3V (TYP.) at V
= 5.0V
A
=25°C
OCTAL DUAL SUPPLY BUS TRANSCEIVER
A
=25°C
CC
=3.3V
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 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.
PACKAGE
TSSOP
SOP
SOP
74LVX3245M
TUBE
74LVX3245
TSSOP
74LVX3245MTR
74LVX3245TTR
T & R
1/10

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74LVX3245M Summary of contents

Page 1

... 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 SOP TSSOP TUBE SOP 74LVX3245M 74LVX3245MTR 74LVX3245TTR T & R 1/10 ...

Page 2

INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS G DIR Don’t Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage CCA V Supply Voltage CCB V DC Input Voltage I V ...

Page 3

RECOMMENDED OPERATING CONDITIONS Symbol V Supply Voltage (note 1) CCA V Supply Voltage (note 1) CCB V Input Voltage I V I/O Voltage I/OA V I/O Voltage I/OB T Operating Temperature op dt/dv Input Rise and Fall Time (note 2) ...

Page 4

DC SPECIFICATIONS FOR V Symbol Parameter V CCA (V) V High Level Input 3.3 IHB Voltage 3.3 V Low Level Input 3.3 ILB Voltage 3.3 V High Level 3.0 OHB Output Voltage 3.3 V Low Level Output 3.0 OLB ...

Page 5

AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter V t Propagation Delay PLH Time (An to Bn) 3.0 t Propagation Delay PHL Time (An to Bn) 3.0 t Output Enable PZL Time (G to Bn) 3.0 t Output Enable PZH Time (G ...

Page 6

CAPACITIVE CHARACTERISTICS Symbol Parameter V CCA (V) C Input open open IN Capacitance C Input/Output 3.3 I/O Capacitance C Dynamic Low 3.3 PD Level Quiet Output (note Dynamic Low 3.3 PD Level Quiet Output ...

Page 7

WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 74LVX3245 7/10 ...

Page 8

DIM. MIN 0 0. 15.20 E 10. 7. 8/10 SO-24 MECHANICAL DATA mm. TYP MAX. 2.65 0.2 2.45 0.49 ...

Page 9

TSSOP24 MECHANICAL DATA DIM. MIN 0. 0.19 c 0.09 D 7.7 E 6. 0° PIN 1 IDENTIFICATION 1 mm. TYP MAX. 1.1 0.15 0.9 0.30 0.20 ...

Page 10

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 ...

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