SN74ABTE16246 Datasheet, PDF (1/13 Pages) Texas Instruments – 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS

SN74ABTE16246
11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER
WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS
SCBS227J – JULY 1993 – REVISED AUGUST 2003
D Member of the Texas Instruments
Widebus Family
DGG OR DL PACKAGE
(TOP VIEW)
D Supports the VME64 ETL Specification
D Reduced TTL-Compatible Input Threshold
Range
D High-Drive Outputs (I_OH = –60 mA,
I_OL = 90 mA) Support Equivalent 25-Ω
Incident-Wave Switching
D V_CCBIAS Pin Minimizes Signal Distortion
During Live Insertion
11OE 1
11DIR 2
11B 3
GND 4
10B 5
9B 6
V_CC 7
8BI 8
48 V_CCBIAS
47 11A
46 10DIR
45 GND
44 10A
43 9A
42 V_CC
41 9DIR
D Internal Pullup Resistor on OE Keeps
Outputs in High-Impedance State During
Power Up or Power Down
D Distributed V_CC and GND Pins Minimize
High-Speed Switching Noise
D Equivalent 25-Ω Series Damping Resistor
on B Port
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
8BO 9
GND 10
7BO 11
6BI 12
6BO 13
5BO 14
GND 15
4BO 16
4BI 17
V_CC 18
3BO 19
40 8A
39 GND
38 7A
37 7BI
36 6A
35 5A
34 GND
33 5BI
32 4A
31 V_CC
30 3A
description/ordering information
2BI 20
GND 21
29 3BI
28 GND
The SN74ABTE16246 is an 11-bit noninverting
transceiver designed for asynchronous two-way
communication between buses. This device has
2BO 22
1BO 23
1BI 24
27 2A
26 1A
25 OE
open-collector and 3-state outputs. The device
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. When OE is low, the device is active.
The B port has an equivalent 25-Ω series output resistor to reduce ringing. Active bus-hold inputs on the B port
hold unused or floating inputs at a valid logic level.
The A port provides for the precharging of the outputs via V_CCBIAS, which establishes a voltage between 1.3 V
and 1.7 V when V_CC is not connected.
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.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SSOP – DL
–40°C to 85°C
Tube
Tape and reel
SN74ABTE16246DL
SN74ABTE16246DLR
ABTE16246
TSSOP – DGG Tape and reel SN74ABTE16246DGGR ABTE16246
† _{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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2003, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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