IDT IDT74FCT245AQ 3.3v cmos octal bidirectional transceiver Datasheet

IDT54/74FCT3245/A
3.3V CMOS OCTAL
BIDIRECTIONAL
TRANSCEIVERS
Integrated Device Technology, Inc.
FEATURES:
DESCRIPTION:
• 0.5 MICRON CMOS Technology
• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
• 25 mil Center SSOP and QSOP Packages
• Extended commercial range of -40°C to +85°C
• VCC = 3.3V ±0.3V, Normal Range or
VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4µW typ. static)
• Rail-to-Rail output swing for increased noise margin
• Military product compliant to MIL-STD-883, Class B
The FCT3245/A octal transceivers are built using advanced dual metal CMOS technology. These high-speed,
low-power transceivers are ideal for synchronous communication between two busses (A and B). The direction control
pin (DIR) controls the direction of data flow. The output enable
pin (OE) overrides the direction control and disables both
ports. All inputs are designed with hysteresis for improved
noise margin.
The FCT3245/A have series current limiting resistors.
These offer low ground bounce, minimal undershoot, and
controlled output fall times-reducing the need for external
series terminating resistors.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
DIR
A1
A2
DIR
OE
A1
B1
B2
3
18
4
A5
6
7
A8
GND
A3
20
19
A3
A4
A6
A7
A2
1
2
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
5
8
Vcc
OE
B1
B2
B3
17
16
B4
15
14
B5
B6
13
9
10
B7
12
11
B8
B3
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
A4
B4
DIR
A1
A2
INDEX
A6
OE
B5
VCC
A5
2650 drw 02
B6
A7
3 2
B7
A3
A8
B8
2650 drw 01
1
4
20 19
18
B1
17
B2
16
B3
A4
5
A5
6
A6
7
15
B4
8
14
B5
A7
L20-2
MILITARY AND COMMERCIAL TEMPERATURE RANGES
8.12
B6
B7
B8
LCC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
1996 Integrated Device Technology, Inc.
GND
A8
9 10 11 12 13
2650 drw 03
FEBRUARY 1996
DSC-2650/5
1
IDT54/74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FUNCTION TABLE(1)
PIN DESCRIPTION
Pin Names
OE
Inputs
Description
Output Enable Input (Active LOW)
OE
DIR
Outputs
DIR
Direction Control Input
L
L
Bus B Data to Bus A
Ax
Side A Inputs or 3-State Outputs
L
H
Bus A Data to Bus B
Bx
Side B Inputs or 3-State Outputs
H
X
High Z State
2650 tbl 01
ABSOLUTE MAXIMUM RATINGS(1)
Unit
V
I OUT
mA
–60 to +60
–60 to +60
2650 tbl 02
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol
Rating
Commercial
Military
VTERM(2) Terminal Voltage
–0.5 to +4.6 –0.5 to +4.6
with Respect to
GND
VTERM(3) Terminal Voltage
–0.5 to +7.0 –0.5 to +7.0
with Respect to
GND
–0.5 to
VTERM(4) Terminal Voltage
–0.5 to
with Respect to
VCC + 0.5
VCC + 0.5
GND
TA
Operating
–40 to +85 –55 to +125
Temperature
TBIAS
Temperature
–55 to +125 –65 to +135
Under Bias
TSTG
Storage
–55 to +125 –65 to +150
Temperature
PT
Power Dissipation
1.0
1.0
DC Output
Current
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High Impedance
Symbol
Parameter(1)
CIN
Input
Capacitance
CI/O
I/O
Capacitance
V
Conditions
VIN = 0V
Typ.
3.5
VOUT = 0V
4.0
Max. Unit
6.0
pF
8.0
NOTE:
1. This parameter is measured at characterization but not tested.
V
pF
2650 lnk 04
°C
°C
°C
W
2650 lnk 03
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
2. Vcc terminals.
3. Input terminals.
4. Output and I/O terminals.
8.12
2
IDT54/74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: TA = –40°C to +85°C, VCC = 2.7V to 3.6V; Military: TA = –55°C to +125°C, VCC = 2.7V to 3.6V
Symbol
VIH
Parameter
Input HIGH Level (Input pins)
Test Conditions(1)
Guaranteed Logic HIGH Level
Min.
2.0
Typ.(2)
—
Max.
5.5
Guaranteed Logic LOW Level
2.0
—
VCC+0.5
–0.5
—
0.8
V
VI = 5.5V
—
—
±1
µA
VI = VCC
—
—
±1
VI = GND
—
—
±1
VI = GND
—
—
±1
VO = V CC
—
—
±1
VO = GND
—
—
±1
Input HIGH Level (I/O pins)
VIL
Input LOW Level
Unit
V
(Input and I/O pins)
II H
Input HIGH Current (Input pins)(6)
VCC = Max.
Input HIGH Current (I/O pins)(6)
II L
Input LOW Current (Input
pins)(6)
Input LOW Current (I/O pins)(6)
I OZH
High Impedance Output Current
VCC = Max.
pins) (6)
µA
I OZL
(3-State Output
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
–0.7
–1.2
V
I ODH
Output HIGH Current
VCC = 3.3V, V IN = V IH or VIL, VO = 1.5V(3)
–36
–60
–110
mA
I ODL
Output LOW Current
VCC = 3.3V, V IN = V IH or VIL, VO = 1.5V(3)
50
90
200
mA
VOH
Output HIGH Voltage
VCC– 0.2
—
—
V
2.4
3.0
—
2.4 (5)
3.0
—
—
—
0.2
VOL
Output LOW Voltage
I OS
Short Circuit Current(4)
VH
Input Hysteresis
I CCL
I CCH
I CCZ
Quiescent Power Supply Current
VCC = Min.
I OH = –0.1mA
VIN = VIH or V IL
I OH = –3mA
VCC = 3.0V
VIN = VIH or V IL
VCC = Min.
I OH = –6mA MIL.
I OH = –8mA COM'L.
I OL = 0.1mA
VIN = VIH or V IL
I OL = 16mA
—
0.2
0.4
I OL = 24mA
—
0.3
0.55
VCC = 3.0V
I OL = 24mA
VIN = VIH or V IL
VCC = Max., VO = GND(3)
—
0.3
0.50
–60
–135
–240
mA
—
150
—
mV
COM'L.
—
0.1
10
µA
MIL.
—
0.1
100
—
VCC = Max.,
VIN = GND or VCC
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. This parameter is guaranteed but not tested.
5. VOH = VCC –0.6V at rated current.
6. The test limits for this parameter is ± 5µA at TA = –55°C.
8.12
V
2650 lnk 05
3
IDT54/74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
∆ICC
Parameter
Quiescent Power Supply Current
Test Conditions(1)
VIN = VCC – 0.6V(3)
VCC = Max.
Min.
—
Typ.(2)
2.0
Max.
30
Unit
µA
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
OE = DIR = GND
One Input Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
60
85
µA/
MHz
IC
Total Power Supply Current (6)
VCC = Max.
VIN = VCC
—
0.6
0.9
mA
Outputs Open
VIN = GND
—
0.6
0.9
VIN = VCC
VIN = GND
—
1.2
1.7 (5)
VIN = VCC –0.6V
VIN = GND
—
1.2
1.8 (5)
fi =10MHz
50% Duty Cycle
VIN = VCC –0.6V
OE = DIR = GND
VIN = GND
One Bit Toggling
VCC = Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
OE = DIR = GND
Eight Bits Toggling
NOTES:
1. For conditions shown as max. or min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCPNCP/2 + fiNi)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fi = Input Frequency
Ni = Number of Inputs at fi
2650 tbl 06
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(3)
FCT3245
Com'l.
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
Output Enable Time
DIR to A or B(4)
Output Disable Time
DIR to A or B(4)
Condition(1)
Min.(2)
CL = 50pF
RL = 500Ω
1.5
FCT3245A
Mil.
Max.
Min.(2)
7.0
1.5
1.5
9.5
1.5
Com'l.
Max.
Min.(2)
7.5
1.5
1.5
10.0
7.5
1.5
1.5
9.5
1.5
7.5
Mil.
Max.
Min.(2)
Max.
Unit
4.6
1.5
4.9
ns
1.5
6.2
1.5
6.5
ns
10.0
1.5
5.0
1.5
6.0
ns
1.5
10.0
1.5
6.2
1.5
6.5
ns
1.5
10.0
1.5
5.0
1.5
6.0
ns
2650 tbl 07
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Propagation Delays and Enable/Disable times are with VCC = 3.3V ±0.3V, Normal Range. For VCC = 2.7V to 3.6V, Extended Range, all Propagation Delays
and Enable/Disable times should be degraded by 20%.
4. This parameter is guaranteed but not tested.
8.12
4
IDT54/74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
SWITCH POSITION
TEST CIRCUITS FOR ALL OUTPUTS
6V
←
V
CC
500Ω
V
V
IN
Pulse
Generator
Test
Open Drain
Disable Low
Enable Low
Disable High
Enable High
All Other tests
Open
GND
OUT
D.U.T.
50pF
R
T
C
500Ω
Switch
6V
GND
Open
2650 lnk 08
DEFINITIONS:
CL= Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
L
2650 drw 04
SET-UP, HOLD AND RELEASE TIMES
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
tH
tSU
tREM
tSU
PULSE WIDTH
3V
1.5V
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
3V
1.5V
0V
tH
2650 drw 06
2650 drw 05
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPHL
3V
1.5V
0V
VOH
1.5V
VOL
DISABLE
3V
1.5V
0V
CONTROL
INPUT
tPZL
OUTPUT
NORMALLY SWITCH
6V
LOW
tPZH
3V
1.5V
0V
OUTPUT
NORMALLY
HIGH
2650 drw 07
SWITCH
GND
tPLZ
3V
1.5V
3V
0.3V
VOL
tPHZ
0.3V
1.5V
0V
VOH
0V
2650 drw 08
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
3. If VCC is below 3V, input voltage swings should be adjusted not to exceed
VCC.
8.12
5
IDT54/74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
X
XX
FCT
Temp. Range
Family
XX
Device Type
X
Package
X
Process
Blank
B
Commercial
MIL-STD-883, Class B
P
D
SO
PY
Q
Plastic DIP (P20-1)
CERDIP (D20-1)
Small Outline IC (SO20-2)
Shrink Small Outline Package (SO20-7)
Quarter-size Small Outline Package (SO20-8)
245
245A
Non-Inverting Octal Bidirectional Transceiver
3
3.3Volt
54
74
–55°C to +125°C
–40°C to +85°C
2650 drw 09
8.12
6
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