Texas Instruments SN74CBT16244DL Manual de Usario

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SN54CBT16244, SN74CBT16244
16-BIT FET BUS SWITCHES
SCDS031I – MAY 1996 – REVISED OCTOBER 2000
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Members of Texas Instruments’ Widebus
Family
Standard ’16244-Type Pinout
5- Switch Connection Between Two Ports
TTL-Compatible Input Levels
description
The ’CBT16244 devices provide 16 bits of
high-speed TTL-compatible bus switching in a
standard ’16244 device pinout. The low on-state
resistance of the switch allows connections to be
made with minimal propagation delay.
These devices are organized as four 4-bit
low-impedance switches with separate
output-enable (OE) inputs. When OE is low, the
switch is on, and data can ow from port A to port
B, or vice versa. When OE is high, the switch is
open, and the high-impedance state exists
between the two ports.
ORDERING INFORMATION
TAPACKAGEORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SSOP DL
Tube SN74CBT16244DL
CBT16244
40
°
C to 85
°
C
SSOP
DL
Tape and reel SN74CBT16244DLR
CBT16244
40 C°
to
85 C°
TSSOP – DGG Tape and reel SN74CBT16244DGGR CBT16244
TVSOP – DGV Tape and reel SN74CBT16244DGVR CY244
–55°C to 125°C CFP – WD Tube SNJ54CBT16244WD SNJ54CBT16244WD
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each 4-bit bus switch)
INPUT
OE
OUTPUTS
A, B
L A port = B port
H Disconnect
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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.
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8
9
10
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14
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19
20
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23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1B1
1B2
GND
1B3
1B4
VCC
2B1
2B2
GND
2B3
2B4
3B1
3B2
GND
3B3
3B4
VCC
4B1
4B2
GND
4B3
4B4
4OE
2OE
1A1
1A2
GND
1A3
1A4
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
SN54CBT16244 . . . WD PACKAGE
SN74CBT16244 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
Widebus is a trademark of Texas Instruments.
SN54CBT16244, SN74CBT16244
16-BIT FET BUS SWITCHES
SCDS031I – MAY 1996 – REVISED OCTOBER 2000
2POST OFFICE BOX 655303 DALLAS, TEXAS 75265
logic diagram (positive logic)
3A1
3A4
1OE
1B1
1B4
47
43
1
2
6
2A4
2OE
2B1
2B4
41
37
48
8
12
2A1
3B1
3B4
36
32
25
13
17
1A1
1A4
3OE
4A4
4OE
30
26
24
19
23
4A1 4B1
4B4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous channel current 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI/O < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θJA (see Note 2): DGG package 70°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package 58°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DL package 63°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditionsis not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54CBT16244 SN74CBT16244
UNIT
MIN MAX MIN MAX
UNIT
VCC Supply voltage 4 5.5 4 5.5 V
VIH High-level control input voltage 2 2 V
VIL Low-level control input voltage 0.8 0.8 V
TA Operating free-air temperature –55 125 –40 85 °C
NOTE 3: All unused control inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
SN54CBT16244, SN74CBT16244
16-BIT FET BUS SWITCHES
SCDS031I – MAY 1996 – REVISED OCTOBER 2000
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54CBT16244 SN74CBT16244
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
MAX MIN TYPMAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
II
VCC = 0 VI = 5.5 V 10 10
A
I
IVCC = 5.5 V VI = 5.5 V or GND ± ±1 1
µ
A
ICC VCC = 5.5 V,
VI = VCC or GND
IO
= 0, 3.2 3 Aµ
ICCControl
inputs
VCC = 5.5 V,
Other inputs at VCC or GND
One input at 3.4 V, 2.5 2.5 mA
CiControl
inputs VI = 3 V or 0 2.5 2.5 pF
Cio(OFF) VO = 3 V or 0, OE = VCC 4.5 4.5 pF
§
VCC = 4 V, VI = 2.4 V, II = 15 mA 20 20
r§
VI = 0, II = 64 mA 5 10 5 7
r
on
§
VCC = 4.5 V VI = 0, II = 30 mA 5 10 5 7
VI = 2.4 V, II = 15 mA 8 14 8 12
All typical values are at V
CC = 5 V, TA = 25°C.
This is the increase in supply current for each input that is at the specied TTL voltage level rather than V
CC or GND.
§Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by
the lower of the voltages of the two (A or B) terminals.
switching characteristics over recommended operating free-air temperature range, C L = 50 pF
(unless otherwise noted) (see Figure 1)
SN54CBT16244 SN74CBT16244
PARAMETER FROM
(INPUT)
TO
(OUTPUT) VCC = 4 V V
CC = 5 V
±0.5 V VCC = 4 V VCC = 5 V
± 0.5 V UNIT
MIN MAX MIN MAX MIN MAX MIN MAX
tpd A or B B or A 0.8* 0.35 0.25 ns
ten OE A or B 10.3 1 9.2 5.5 1 5.1 ns
tdis OE A or B 9.7 1 8.2 5.2 1 5.4 ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specied load capacitance, when
driven by an ideal voltage source (zero output impedance).

Especificaciones del producto

Marca: Texas Instruments
Categoría: No categorizado
Modelo: SN74CBT16244DL

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