Texas Instruments SN74ABTE16246DGGR, SN74ABTE16246DL, SN74ABTE16246DLR Datasheet
SN54ABTE16246, SN74ABTE16246
11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS
WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS
SCBS227F – JULY 1993 – REVISED JUNE 1999
D
Members of the Texas Instruments
Widebus
D
State-of-the-Art
Family
EPIC-ΙΙB
BiCMOS Design
Significantly Reduces Power Dissipation
D
Support the VME64 ETL Specification
D
Reduced TTL-Compatible Input Threshold
Range
D
High-Drive Outputs (IOH = –60 mA
I
= 90 mA) Support Equivalent 25-Ω
OL
Incident-Wave Switching
D
VCCBIAS Pin Minimizes Signal Distortion
During Live Insertion
D
Internal Pullup Resistor on OE Keeps
Outputs in High-Impedance State During
Power Up or Power Down
D
Distributed VCC and GND Pin Configuration
Minimizes 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
D
Package Options Include Plastic Shrink
Small-Outline (DL) and Thin-Shrink
Small-Outline (DGG) Packages and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
Using 25-mil Center-to-Center Spacings
SN54ABTE16246 . . . WD PACKAGE
SN74ABTE16246 . . . DGG OR DL PACKAGE
1 1DIR
1 1OE
11B
GND
10B
9B
V
CC
8BI
8BO
GND
7BO
6BI
6BO
5BO
GND
4BO
4BI
V
CC
3BO
2BI
GND
2BO
1BO
1BI
(TOP VIEW)
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
V
CC
11A
10DIR
GND
10A
9A
V
CC
9DIR
8A
GND
7A
7BI
6A
5A
GND
5BI
4A
V
CC
3A
3BI
GND
2A
1A
OE
BIAS
description
The ’ABTE16246 devices are 11-bit noninverting transceivers designed for asynchronous two-way
communication between buses. These devices have open-collector and 3-state outputs. They allow 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
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
and 1.7 V when V
is not connected.
CC
The SN54ABTE16246 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABTE16246 is characterized for operation from –40°C to 85°C.
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 and EPICΙΙ-B are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
) input can be used to disable the device so that the buses
BIAS, which establishes a voltage between 1.3 V
CC
Copyright 1999, Texas Instruments Incorporated
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1
SN54ABTE16246, SN74ABTE16246
OPERATION
11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS
WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS
SCBS227F – JULY 1993 – REVISED JUNE 1999
FUNCTION TABLE
INPUTS
OE 9DIR 10DIR 11DIR 11OE
H X X X X Isolation
L XX XX
L L X X X 9A data to 9B bus
L H X X X 9B data to 9A bus
L X L X X 10A data to 10B bus
L X H X X 10B data to 10A bus
L X X L L 11A data to 11B bus
L X X L H 11A, 11B isolation
L X X H X 11B data to 11A bus
†
OC = Open-collector outputs
1BI–8BI data to 1A–8A bus (OC†),
1A–8A data to 1BO–8BO bus
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
SN54ABTE16246, SN74ABTE16246
11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS
WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS
SCBS227F – JULY 1993 – REVISED JUNE 1999
11OE
11DIR
11B
OE
10DIR
10B
9DIR
9B
1
2
3
25
46
5
41
6
47
44
43
11A
10A
9A
1BI
1BO
24
23
To Seven Other Channels
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
26
1A
3
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