ETC 74FST6800D

74FST6800
10-Bit Bus Switch with
Precharged Outputs
The ON Semiconductor 74FST6800 is a 10–bit bus switch with
precharged outputs. The device is CMOS TTL compatible when
operating between 4 and 5.5 Volts. The device exhibits extremely low
RON and adds nearly zero propagation delay. The device adds no noise
or ground bounce to the system.
• RON 4 Typical
• Less Than 0.25 ns–Max Delay Through Switch
• Nearly Zero Standby Current
• No Circuit Bounce
• Control Inputs are TTL/CMOS Compatible
• Pin–For–Pin Compatible With QS6800, FST6800, CBT6800
• All Popular Packages: QSOP–24, TSSOP–24, SOIC–24
OE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
GND
1
2
3
4
5
6
7
8
9
10
11
12
VCC
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BIASV
24
23
22
21
20
19
18
17
16
15
14
13
Figure 1. 24–Lead
Pinout
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MARKING
DIAGRAMS
24
24
1
Pin
24
24
OE
B0–B9
Function
L
A0–A9
Connect
H
Bias V
Precharge
1
TSSOP–24
DT SUFFIX
CASE 948H
1
24
24
Figure 2. Truth Table
A
L, WL
Y, YY
W, WW
Description
B
Bus B
FST6800
AWLYYWW
1
QSOP–24
QS SUFFIX
CASE 492B
Bus Switch Enable
Bus A
February, 2002 – Rev. 2
FST
6800
ALYW
NOTE:
H = HIGH Voltage Level
L = LOW Voltage Level
A
 Semiconductor Components Industries, LLC, 2002
1
SO–24
D SUFFIX
CASE 751E
PIN NAMES
OE
FST6800
AWLYWW
1
=
=
=
=
Assembly Location
Wafer Lot
Year
Work Week
ORDERING INFORMATION
1
Device
Package
Shipping
74FST6800D
SO–24
48 Units/Rail
74FST6800DR2
SO–24
2500 Units/Reel
74FST6800DT
TSSOP–24
96 Units/Rail
74FST6800DTR2
TSSOP–24
2500 Units/Reel
74FST6800QS
QSOP–24
96 Units/Rail
74FST6800QSR
QSOP–24
2500 Units/Reel
Publication Order Number:
74FST6800/D
74FST6800
13
A0
A9
OE
2
23
11
14
1
Figure 3. Logic Diagram
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2
Bias V
B0
B9
74FST6800
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage
0.5 to 7.0
V
VI
DC Input Voltage
0.5 to 7.0
V
VO
DC Output Voltage
0.5 to 7.0
V
IIK
DC Input Diode Current
VI GND
50
mA
IOK
DC Output Diode Current
VO GND
50
mA
IO
DC Output Sink Current
128
mA
ICC
DC Supply Current per Supply Pin
100
mA
IGND
DC Ground Current per Ground Pin
100
mA
TSTG
Storage Temperature Range
65 to 150
C
TL
Lead Temperature, 1 mm from Case for 10 Seconds
TJ
Junction Temperature Under Bias
JA
Thermal Resistance
MSL
Moisture Sensitivity
FR
Flammability Rating
VESD
ESD Withstand Voltage
Human Body Model (Note 1)
Machine Model (Note 2)
Charged Device Model (Note 3)
2000
200
N/A
V
ILATCH–UP
Latch–Up Performance
Above VCC and Below GND at 85C (Note 4)
500
mA
SOIC
TSSOP
QSOP
260
C
150
C
125
170
200
C/W
Level 1
Oxygen Index: 28 to 34
UL 94 V–0 @ 0.125 in
Maximum Ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those
indicated may adversely affect device reliability. Functional operation under absolute maximum–rated conditions is not implied. Functional
operation should be restricted to the Recommended Operating Conditions.
1. Tested to EIA/JESD22–A114–A.
2. Tested to EIA/JESD22–A115–A.
3. Tested to JESD22–C101–A.
4. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC
Supply Voltage
VI
Input Voltage
VO
Output Voltage
TA
Operating Free–Air Temperature
t/V
Input Transition Rise or Fall Rate
Switch I/O
Operating, Data Retention Only
Min
Max
Unit
4.0
5.5
V
(Note 5)
0
5.5
V
(HIGH or LOW State)
0
5.5
V
40
85
C
DC
5
ns/V
0
Switch Control Input
VCC = 5.0 V 0.5 V
5. Unused control inputs may not be left open. All control inputs must be tied to a high or low logic input voltage level.
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74FST6800
DC ELECTRICAL CHARACTERISTICS
VCC
Symbol
Parameter
Conditions
(V)
IIN = 18mA
TA = 40C to 85C
Min
Typ*
4.5
Max
Unit
1.2
V
VIK
Clamp Diode Resistance
VIH
High–Level Input Voltage
VIL
Low–Level Input Voltage
4.0 to 5.5
0.8
V
II
Input Leakage Current
0 VIN 5.5 V
5.5
1.0
A
IOZ
OFF–STATE Leakage Current
0 A, B VCC
5.5
1.0
A
RON
Switch On Resistance (Note 6)
VIN = 0 V, IIN = 64 mA
4.5
4
7
VIN = 0 V, IIN = 30 mA
4.5
4
7
VIN = 2.4 V, IIN = 15 mA
4.5
8
15
11
20
4.0 to 5.5
2.0
V
VIN = 2.4 V, IIN = 15 mA
4.0
ICC
Quiescent Supply Current
VIN = VCC or GND, IOUT = 0
5.5
3
A
ICC
Increase In ICC per Input
One input at 3.4 V, Other inputs at VCC or GND
5.5
2.5
mA
*Typical values are at VCC = 5.0 V and TA = 25C.
6. Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is determined by the lower
of the voltages on the two (A or B) pins.
AC ELECTRICAL CHARACTERISTICS
TA = 40C to 85C
CL = 50 pF, RU = RD = 500 Symbol
Parameter
Conditions
tPHL,PLH
t
Prop Delay Bus to Bus (Note 7)
VI = OPEN
tPZH,tPZL
Output Enable Time, IOE to Bus A, B
Bias V = GND
VI = OPEN for tPZH
tPHZ,tPLZ
Output Disable Time, IOE to Bus A, B
Bias V = GND
VI = OPEN for tPHZ
VCC = 4.5–5.5 V
VCC = 4.0 V
Min
Min
Max
Max
Unit
0.25
0.25
ns
1.0
5.1
5.6
ns
1.0
5.5
5.5
ns
7. This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the
typical On resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).
CAPACITANCE (Note 8)
Symbol
Parameter
Conditions
Typ
Max
Unit
CIN
Control Pin Input Capacitance
VCC = 5.0 V
3
pF
CI/O
A/B Port Input/Output Capacitance
VCC, OE = 5.0 V
5
pF
8. TA = 25C, f = 1 MHz, Capacitance is characterized but not tested.
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4
74FST6800
AC Loading and Waveforms
VI
500 FROM
OUTPUT
UNDER
TEST
CL*
500 NOTES:
1. Input driven by 50 source terminated in 50 .
2. CL includes load and stray capacitance.
*CL = 50 pF
Figure 4. AC Test Circuit
tf = 2.5 nS
90 %
SWITCH
INPUT
tf = 2.5 nS
90 %
1.5 V
3.0 V
1.5 V
10 %
10 %
tPLH
GND
tPLH
VOH
1.5 V
1.5 V
OUTPUT
VOL
Figure 5. Propagation Delays
tf = 2.5 nS
tf = 2.5 nS
ENABLE
INPUT
90 %
90 %
1.5 V
1.5 V
10 %
10 %
tPZL
OUTPUT
3.0 V
GND
tPZL
1.5 V
tPZH
VOL + 0.3 V
VOL
tPHZL
VOH
1.5 V
OUTPUT
Figure 6. Enable/Disable Delays
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5
VOH – 0.3 V
74FST6800
PACKAGE DIMENSIONS
SO–24
D SUFFIX
CASE 751E–04
ISSUE E
–A–
24
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN
EXCESS OF D DIMENSION AT MAXIMUM
MATERIAL CONDITION.
13
–B–
12X
P
0.010 (0.25)
1
M
B
M
12
24X
D
J
0.010 (0.25)
M
T A
S
B
S
F
R
C
–T–
SEATING
PLANE
M
22X
G
K
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6
X 45 DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
15.25
15.54
7.40
7.60
2.35
2.65
0.35
0.49
0.41
0.90
1.27 BSC
0.23
0.32
0.13
0.29
0
8
10.05
10.55
0.25
0.75
INCHES
MIN
MAX
0.601
0.612
0.292
0.299
0.093
0.104
0.014
0.019
0.016
0.035
0.050 BSC
0.009
0.013
0.005
0.011
0
8
0.395
0.415
0.010
0.029
74FST6800
PACKAGE DIMENSIONS
TSSOP–24
DT SUFFIX
CASE 948H–01
ISSUE A
24X K REF
0.10 (0.004)
0.15 (0.006) T U
M
T U
V
S
S
2X
24
L/2
13
B
–U–
L
PIN 1
IDENT.
12
1
0.15 (0.006) T U
S
S
A
–V–
C
0.10 (0.004)
–T– SEATING
PLANE
G
D
H
N
ÉÉ
ÇÇÇ
ÇÇÇ
ÉÉ
K1
SECTION N–N
J
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
7.70
7.90
4.30
4.50
--1.20
0.05
0.15
0.50
0.75
0.65 BSC
0.27
0.37
0.09
0.20
0.09
0.16
0.19
0.30
0.19
0.25
6.40 BSC
0
8
INCHES
MIN
MAX
0.303
0.311
0.169
0.177
--0.047
0.002
0.006
0.020
0.030
0.026 BSC
0.011
0.015
0.004
0.008
0.004
0.006
0.007
0.012
0.007
0.010
0.252 BSC
0
8
0.25 (0.010)
K
J1
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS. MOLD FLASH
OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
4. DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED
0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE DETERMINED AT
DATUM PLANE -W-.
M
–W–
N
DETAIL E
F
DETAIL E
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7
74FST6800
PACKAGE DIMENSIONS
QSOP–24
QS SUFFIX
CASE 492B–01
ISSUE O
–A–
Q
R
H x 45
U
L
MOLD PIN
MARK
RAD.
0.013 X 0.005
DP. MAX
–B–
RAD.
0.005–0.010
TYP
G
P
0.25 (0.010)
DETAIL E
T
M
V
N 8 PL
J
K
M
–T–
C
24 PL
D
0.25 (0.010)
SEATING
PLANE
M
T B
S
A
F
S
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. THE BOTTOM PACKAGE SHALL BE BIGGER THAN
THE TOP PACKAGE BY 4 MILS (NOTE: LEAD SIDE
ONLY). BOTTOM PACKAGE DIMENSION SHALL
FOLLOW THE DIMENSION STATED IN THIS
DRAWING.
4. PLASTIC DIMENSIONS DOES NOT INCLUDE MOLD
FLASH OR PROTRUSIONS. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 6 MILS PER
SIDE.
5. BOTTOM EJECTOR PIN WILL INCLUDE THE
COUNTRY OF ORIGIN (COO) AND MOLD CAVITY I.D.
INCHES
DIM MAX
MIN
A
0.337
0.344
B
0.150
0.157
C
0.061
0.068
D
0.008
0.012
F
0.016
0.035
G
0.025 BSC
H
0.008
0.018
J 0.0098 0.0075
K
0.004
0.010
L
0.230
0.244
M
0
8
N
0
7
P
0.027
0.037
Q
0.035 DIA
R
0.035
0.045
U
0.035
0.045
V
0
8
MILLIMETERS
MAX
MIN
8.56
8.74
3.81
3.99
1.55
1.73
0.20
0.31
0.41
0.89
0.64 BSC
0.20
0.46
0.249
0.191
0.10
0.25
5.84
6.20
0
8
0
7
0.69
0.94
0.89 DIA
0.89
1.14
0.89
1.14
0
8
DETAIL E
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
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attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
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PUBLICATION ORDERING INFORMATION
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Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
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Phone: 81–3–5740–2700
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For additional information, please contact your local
Sales Representative.
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74FST6800/D