Datasheet IDT74FCT3245SOB, IDT74FCT3245SO, IDT74FCT3245QB, IDT74FCT3245Q, IDT74FCT3245PYB Datasheet (Integrated Device Technology)

Integrated Device Technology, Inc.

MILITARY AND COMMERCIAL TEMPERATURE RANGES FEBRUARY 1996

1996 Integrated Device Technology, Inc. 8.12 DSC-2650/5

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.

DESCRIPTION:

DIR

OE

A

1

A

2

A

3

A

4

A

5

A

6

A

7

A

8

B

1

B

2

B

3

B

4

B

5

B

6

B

7

B

8

2650 drw 01

3.3V CMOS OCTAL
BIDIRECTIONAL
TRANSCEIVERS

IDT54/74FCT3245/A

FEATURES:

• 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

•V

CC = 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

2650 drw 02

FUNCTIONAL BLOCK DIAGRAM

PIN CONFIGURATIONS

2650 drw 03

1

INDEX

A3

DIR

V

CC

LCC

TOP VIEW

3 2 20 19

1

4
5
6
7
8

18
17
16
15

14

9 10111213

L20-2

A4
A5

A6
A7

A2

B7

A8

B6

GND

B

8

OE

B2

B1

B3
B4
B5

A1

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

5
6
7
8
9
10

1
2
3
4

20
19
18
17
16
15
14
13
12
11GND

A

1

A

2

A3

DIR

A

4

A5
A6

A7
A

8

B
B
B
B
B
B

B
B

Vcc

1

OE

2
3
4

5
6

7
8

P20-1

D20-1
SO20-2
SO20-7
SO20-8

&

E20-1

DIP/SOIC/SSOP/QSOP/CERPACK

TOP VIEW

IDT54/74FCT3245/A

3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

8.12 2

FUNCTION TABLE

(1)

Inputs

OE

OE

DIR Outputs

L L Bus B Data to Bus A
L H Bus A Data to Bus B

H X High Z State

NOTE:

1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High Impedance

NOTE:

1. This parameter is measured at characterization but not tested.

PIN DESCRIPTION

ABSOLUTE MAXIMUM RATINGS

(1)

2650 tbl 02

CAPACITANCE (TA = +25°C, f = 1.0MHz)

2650 lnk 04

2650 tbl 01

Symbol Rating Commercial Military Unit

VTERM

(2)

Terminal Voltage
with Respect to
GND

–0.5 to +4.6 –0.5 to +4.6 V

VTERM

(3)

Terminal Voltage
with Respect to
GND

–0.5 to +7.0 –0.5 to +7.0 V

VTERM

(4)

Terminal Voltage
with Respect to
GND

–0.5 to

V

CC + 0.5

–0.5 to

VCC + 0.5

V

TA Operating

Temperature

–40 to +85 –55 to +125 °C

TBIAS Temperature

Under Bias

–55 to +125 –65 to +135 °C

TSTG Storage

Temperature

–55 to +125 –65 to +150 °C

PT Power Dissipation 1.0 1.0 W
IOUT DC Output

Current

–60 to +60 –60 to +60 mA

2650 lnk 03

Symbol Parameter

(1)

Conditions Typ. Max. Unit

CIN Input

Capacitance

VIN = 0V 3.5 6.0 pF

CI/O I/O

Capacitance

VOUT = 0V 4.0 8.0 pF

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.

Pin Names Description

OE

Output Enable Input (Active LOW)

DIR Direction Control Input

Ax Side A Inputs or 3-State Outputs
Bx Side B Inputs or 3-State Outputs

IDT54/74FCT3245/A

3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

8.12 3

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:
Commercial: T

A = –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 Parameter Test Conditions

(1)

Min. Typ.

(2)

Max. Unit

VIH Input HIGH Level (Input pins) Guaranteed Logic HIGH Level 2.0 — 5.5 V

Input HIGH Level (I/O pins) 2.0 — VCC+0.5

VIL Input LOW Level Guaranteed Logic LOW Level –0.5 — 0.8 V

(Input and I/O pins)

II H Input HIGH Current (Input pins)

(6)

VCC = Max. VI = 5.5V — — ±1 µA

Input HIGH Current (I/O pins)

(6)

VI = VCC — — ±1

II L Input LOW Current (Input pins)

(6)

VI = GND — — ±1

Input LOW Current (I/O pins)

(6)

VI = GND — — ±1
IOZH High Impedance Output Current VCC = Max. VO = VCC — — ±1 µA
IOZL (3-State Output pins)

(6)

VO = GND — — ±1
VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1.2 V
IODH Output HIGH Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V

(3)

–36 –60 –110 mA

IODL Output LOW Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V

(3)

50 90 200 mA

VOH Output HIGH Voltage VCC = Min. IOH = –0.1mA VCC–0.2 — — V

VIN = VIH or VIL IOH = –3mA 2.4 3.0 —
VCC = 3.0V

V

IN = VIH or VIL

IOH = –6mA MIL.

I

OH = –8mA COM'L.

2.4

(5)

3.0 —

VOL Output LOW Voltage VCC = Min. IOL = 0.1mA — — 0.2 V

VIN = VIH or VIL IOL = 16mA — 0.2 0.4

IOL = 24mA — 0.3 0.55

VCC = 3.0V
V

IN = VIH or VIL

IOL = 24mA — 0.3 0.50

IOS Short Circuit Current

(4)

VCC = Max., VO = GND

(3)

–60 –135 –240 mA
VH Input Hysteresis — — 150 — mV
ICCL

ICCH

Quiescent Power Supply Current VCC = Max.,

V

IN = GND or VCC

COM'L. — 0.1 10 µA

ICCZ MIL. — 0.1 100

2650 lnk 05

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. V

OH = VCC –0.6V at rated current.

6. The test limits for this parameter is ± 5µA at T

A = –55°C.

IDT54/74FCT3245/A

3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

8.12 4

POWER SUPPLY CHARACTERISTICS

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 V

CC = 3.3V, +25°C ambient.

3. Per TTL driven input; all other inputs at V

CC 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 I

CC formula. These limits are guaranteed but not tested.

6. I

C = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ∆ICC DHNT + ICCD (fCPNCP/2 + fiNi)
I

CC = Quiescent Current (ICCL, ICCH and ICCZ)

∆I

CC = Power Supply Current for a TTL High Input

D

H = Duty Cycle for TTL Inputs High

N

T = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f

CP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

N

CP = Number of Clock Inputs at fCP

fi = Input Frequency
N

i = Number of Inputs at fi

2650 tbl 06

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

(3)

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 V

CC = 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.

2650 tbl 07

Symbol Parameter Test Conditions

(1)

Min. Typ.

(2)

Max. Unit

∆ICC Quiescent Power Supply Current VCC = Max. VIN = VCC – 0.6V

(3)

— 2.0 30 µA

ICCD Dynamic Power Supply

Current

(4)

VCC = Max.
Outputs Open

OE

= DIR = GND
One Input Toggling
50% Duty Cycle

V

IN = VCC

V

IN = GND

—6085µA/

MHz

IC Total Power Supply Current

(6)

VCC = Max. VIN = VCC — 0.6 0.9 mA
Outputs Open VIN = GND
fi =10MHz
50% Duty Cycle VIN = VCC –0.6V — 0.6 0.9

OE

= DIR = GND
One Bit Toggling

VIN = GND

VCC = Max.
Outputs Open
fi = 2.5MHz

V

IN = VCC

V

IN = GND

— 1.2 1.7

(5)

50% Duty Cycle

OE

= DIR = GND
Eight Bits Toggling

V

IN = VCC –0.6V

V

IN = GND

— 1.2 1.8

(5)

FCT3245 FCT3245A

Com'l. Mil. Com'l. Mil.

Symbol Parameter Condition

(1)

Min.

(2)

Max. Min.

(2)

Max. Min.

(2)

Max. Min.

(2)

Max. Unit

tPLH
tPHL

Propagation Delay
A to B, B to A

CL = 50pF

R

L = 500Ω

1.5 7.0 1.5 7.5 1.5 4.6 1.5 4.9 ns

tPZH
tPZL

Output Enable Time

OE

to A or B

1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 ns

tPHZ
tPLZ

Output Disable Time

OE

to A or B

1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 ns

tPZH
tPZL

Output Enable Time
DIR to A or B

(4)

1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 ns

tPHZ
tPLZ

Output Disable Time
DIR to A or B

(4)

1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 ns

IDT54/74FCT3245/A

3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

8.12 5

DEFINITIONS:

C

L= Load capacitance: includes jig and probe capacitance.

R

T = Termination resistance: should be equal to ZOUT of the Pulse

Generator.

3V

1.5V
0V

3V

1.5V
0V

3V

1.5V
0V

3V

1.5V

0V

DATA

INPUT

TIMING

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRONOUS CONTROL

t

SU

t

H

t

REM

t

SU

t

H

HIGH-LOW-HIGH

PULSE

LOW-HIGH-LOW

PULSE

t

W

1.5V

1.5V

SAME PHASE

INPUT TRANSITION

3V

1.5V
0V

1.5V

V

OH

t

PLH

OUTPUT

OPPOSITE PHASE

INPUT TRANSITION

3V

1.5V
0V

t

PLH

t

PHL

t

PHL

V

OL

CONTROL

INPUT

3V

1.5V
0V

3V

0V

OUTPUT

NORMALLY

LOW

OUTPUT

NORMALLY

HIGH

SWITCH
6V

SWITCH
GND

V

OL

0.3V

0.3V

t

PLZ

t

PZL

t

PZH

t

PHZ

3V

0V

1.5V

1.5V

ENABLE DISABLE

V

OH

PRESET

CLEAR

CLOCK ENABLE

ETC.

Pulse

Generator

R

T

D.U.T.

V

CC

V

IN

C

L

V

OUT

50pF

500

Ω

500

Ω

GND

6V

←

Open

ENABLE AND DISABLE TIMESPROPAGATION DELAY

SET-UP, HOLD AND RELEASE TIMES PULSE WIDTH

SWITCH POSITION

TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS

2650 drw 08

2650 drw 04

2650 drw 05

2650 drw 07

2650 drw 06

Test Switch

Open Drain

Disable Low

Enable Low

6V

Disable High

Enable High

GND

All Other tests Open

2650 lnk 08

NOTES:

1. Diagram shown for input Control Enable-LOW and input Control Disable­HIGH.

2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; t

F ≤ 2.5ns; tR ≤ 2.5ns.

3. If V

CC is below 3V, input voltage swings should be adjusted not to exceed

V

CC.

IDT54/74FCT3245/A

3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

8.12 6

ORDERING INFORMATION

2650 drw 09

IDT XX

Temp. Range

XX

Device Type

X

Package

X

Process

54
74

–55°C to +125°C
–40°C to +85°C

Blank
B

P
D
SO
PY
Q

245
245A

Commercial
MIL-STD-883, Class B

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)

Non-Inverting Octal Bidirectional Transceiver

FCT

X

Family

3 3.3Volt