74AC245TTR STMicroelectronics, 74AC245TTR Datasheet

IC TRANSCVR TRI-ST 8BIT 20TSSOP

74AC245TTR

Manufacturer Part Number
74AC245TTR
Description
IC TRANSCVR TRI-ST 8BIT 20TSSOP
Manufacturer
STMicroelectronics
Series
74ACr
Datasheet

Specifications of 74AC245TTR

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 ~ 6 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
497-2914-2
DESCRIPTION
The 74AC245 is an advanced high-speed CMOS
OCTAL
fabricated with sub-micron silicon gate and
double-layer metal wiring C
This IC is intended for two-way asynchronous
communication between data buses and the
direction of data transmission is determined by
PIN CONNECTION AND IEC LOGIC SYMBOLS
April 2001
HIGH SPEED: t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
50 TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 244
IMPROVED LATCH-UP IMMUNITY
CC
PLH
OH
NIH
CC
= 4 A(MAX.) at T
| = I
(OPR) = 2V to 6V
= V
t
PHL
OL
BUS
NIL
= 24mA (MIN)
= 28 % V
PD
TRANSCEIVER
= 4.5ns (TYP.) at V
A
CC
=25°C
2
(MIN.)
MOS tecnology.
WITH 3 STATE OUTPUTS (NON INVERTED)
(3-STATE)
CC
= 5V
ORDER CODES
DIR input. The enable input G can be used to
disable the device so that the buses are effectively
isolated..
All floating bus terminals during HIGH-Z state
must be held HIGH or LOW
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
OCTAL BUS TRANSCEIVER
PACKAGE
TSSOP
SOP
DIP
DIP
74AC245M
74AC245B
TUBE
SOP
74AC245
74AC245MTR
74AC245TTR
TSSOP
T & R
1/9

Related parts for 74AC245TTR

74AC245TTR Summary of contents

Page 1

... All floating bus terminals during HIGH-Z state (3-STATE) must be held HIGH or LOW All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. 74AC245 SOP TSSOP TUBE T & R 74AC245B 74AC245M 74AC245MTR 74AC245TTR 1/9 ...

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 Input Voltage Output Voltage O ...

Page 3

DC SPECIFICATIONS Symbol Parameter V (V) V High Level Input 3.0 IH Voltage 4.5 5.5 V Low Level Input 3.0 IL Voltage 4.5 5.5 V High Level Output 3.0 OH Voltage 4.5 5.5 3.0 4.5 5.5 V Low Level Output ...

Page 4

AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter V ( Propagation Delay 3.3 PLH PHL Time 5 Output Enable 3.3 PZL PZH Time 5 Output Disable 3.3 PLZ PHZ Time 5.0 (*) Voltage range is ...

Page 5

WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 74AC245 5/9 ...

Page 6

Plastic DIP-20 (0.25) MECHANICAL DATA DIM. MIN. a1 0.254 B 1. 6/9 mm TYP. MAX. MIN. 0.010 1.65 0.055 0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34 ...

Page 7

SO-20 MECHANICAL DATA mm DIM. MIN. TYP 0. 0.35 b1 0. 12.60 E 10.00 e 1.27 e3 11.43 F 7. inch MAX. MIN. TYP. 2.65 0.20 0.004 2.45 ...

Page 8

DIM. MIN 0.05 A2 0.85 b 0.19 c 0.09 D 6.4 E 6. PIN 1 IDENTIFICATION 1 8/9 TSSOP20 MECHANICAL DATA mm TYP. MAX. 1.1 ...

Page 9

... 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 ...

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