SN74ALVCHR16245 Datasheet, PDF (1/13 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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FEATURES
• Member of the Texas Instruments Widebus™
Family
• Operates From 1.65 V to 3.6 V
• Max t_pd of 4.2 ns at 3.3 V
• ±12-mA Output Drive at 3.3 V
• All Outputs Have Equivalent 26-Ω Series
Resistors, So No External Resistors Are
Required
• Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
DESCRIPTION/ORDERING INFORMATION
This 16-bit (dual-octal) noninverting bus transceiver is
designed for 1.65-V to 3.6-V V_CC operation.
The SN74ALVCHR16245 is designed for
asynchronous communication between data buses.
The control-function implementation minimizes
external timing requirements.
This device can be used as two 8-bit transceivers or
one 16-bit transceiver. It allows data transmission
from the A bus to the B bus or from the B bus to the
A bus, depending on the logic level at the
direction-control (DIR) input. The output-enable (OE)
input can be used to disable the device so that the
buses are effectively isolated.
SN74ALVCHR16245
16-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES064G – DECEMBER 1995 – REVISED OCTOBER 2004
DGG OR DL PACKAGE
(TOP VIEW)
1DIR 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V_CC 18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
48 1OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE
All outputs, which are designed to sink up to 12 mA, include equivalent 26-Ω series resistors to reduce overshoot
and undershoot.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
T_A
-40°C to 85°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
SSOP - DL
Tape and reel
SN74ALVCHR16245LR
TSSOP - DGG
Tape and reel
SN74ALVCHR16245GR
VFBGA - GQL
VFBGA - ZQL (Pb-free)
Tape and reel
SN74ALVCHR16245KR
74ALVCHR16245ZQLR
TOP-SIDE MARKING
ALVCHR16245
ALVCHR16245
VR245
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1995–2004, Texas Instruments Incorporated