74LCXH245WM Datasheet PDF - Fairchild Semiconductor
Part Number | 74LCXH245WM | |
Description | Low Voltage Bidirectional Transceiver with Bushold | |
Manufacturers | Fairchild Semiconductor | |
Logo | ||
There is a preview and 74LCXH245WM download ( pdf file ) link at the bottom of this page. Total 10 Pages |
Preview 1 page No Preview Available ! October 2000
Revised September 2001
74LCXH245
Low Voltage Bidirectional Transceiver with Bushold
General Description
The LCXH245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low voltage
(2.5V and 3.3V) VCC applications. The T/R input deter-
mines the direction of data flow through the device. The OE
input disables both the A and B ports by placing them in a
high impedance state.
The LCXH245 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation. The LCXH16244 data inputs
include active bushold circuitry, eliminating the need for
external pull-up resistors to hold unused or floating data
inputs at a valid logic level.
Features
s 5V tolerant control inputs
s 2.3V–3.6V VCC specifications provided
s 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance outputs
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s Bushold on inputs eliminates the need for external
pull-up/pull-down resistors
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74LCXH245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXH245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXH245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LCXH245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
Description
OE
T/R
A0–A7
B0–B7
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs (Bushold)
Side B Inputs or 3-STATE Outputs (Bushold)
GTO is a trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS500363
www.fairchildsemi.com
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AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance)
Test
tPLH, tPHL
tPZL, tPLZ
tPZH, tPHZ
Switch
Open
6V at VCC = 3.3 ± 0.3V; and 2.7V
VCC x 2 at VCC = 2.5 ± 0.2V
GND
Waveform for Inverting and Non-Inverting Functions
3-STATE Output High Enable and
Disable Times for Logic
Propagation Delay. Pulse Width and trec Waveforms
Setup Time, Hold Time and Recovery Time for Logic
3-STATE Output Low Enable and
Disable Times for Logic
trise and tfall
FIGURE 2. Waveforms
(Input Characteristics; f =1MHz, tr = tf = 3ns)
Symbol
Vmi
Vmo
Vx
Vy
3.3V ± 0.3V
1.5V
1.5V
VOL + 0.3V
VOH − 0.3V
VCC
2.7V
1.5V
1.5V
VOL + 0.3V
VOH − 0.3V
2.5V ± 0.2V
VCC/2
VCC/2
VOL + 0.15V
VOH − 0.15V
5 www.fairchildsemi.com
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Information | Total 10 Pages | |
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Download | [ 74LCXH245WM.PDF Datasheet ] |
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