IDT IDT29FCT520AT, IDT29FCT520BT, IDT29FCT520CT, IDT29FCT520DT, IDT29FCT521AT User Manual

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MULTILEVEL
PIPELINE REGISTERS

Integrated Device Technology, Inc.

FEATURES:

• A, B, C and D speed grades

• Low input and output leakage ≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)

• High drive outputs (-15mA IOH, 48mA IOL)

• Meets or exceeds JEDEC standard 18 specifications

• Product available in Radiation Tolerant and Radiation

Enhanced versions

• Military product compliant to MIL-STD-883, Class B

and DESC listed (dual marked)

• Available in DIP, SOIC, SSOP, QSOP, CERPACK and

LCC packages

IDT29FCT520AT/BT/CT/DT
IDT29FCT521AT/BT/CT/DT

DESCRIPTION:

The IDT29FCT520AT/BT/CT/DT and IDT29FCT521AT/
BT/CT/DT each contain four 8-bit positive edge-triggered
registers. These may be operated as a dual 2-level or as a
single 4-level pipeline. A single 8-bit input is provided and any
of the four registers is available at the 8-bit, 3-state output.

These devices differ only in the way data is loaded into and
between the registers in 2-level operation. The difference is
illustrated in Figure 1. In the IDT29FCT520AT/BT/CT/DT
when data is entered into the first level (I = 2 or I = 1), the
existing data in the first level is moved to the second level. In
the IDT29FCT521AT/BT/CT/DT, these instructions simply
cause the data in the first level to be overwritten. Transfer of
data to the second level is achieved using the 4-level shift
instruction (I = 0). This transfer also causes the first level to
change. In either part I=3 is for hold.

FUNCTIONAL BLOCK DIAGRAM

2

I ,I10

CLK

REGISTER

CONTROL

1

S ,S10

OCTAL REG. A1

OCTAL REG. A2

2

D -D70

8

MUX

OCTAL REG. B1

OCTAL REG. B2

MUX

OE

8

2619 drw 01

Y -Y70

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

MILITARY AND COMMERCIAL TEMPERATURE RANGES APRIL 1994

1994 Integrated Device Technology, Inc. DSC-4215/4

6.2

1

IDT29FCT520AT/BT/CT/DT, 521AT/BT/CT/DT
MULTILEVEL PIPELINE REGISTERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN CONFIGURATIONS

I

0

D0
D
D
D3
D4
D
D
D7

CLK

GND

1

I1

2

3
1
2

5
6

4

5

6

7

8

9

10

11

12

P24-1

D24-1
SO24-2
SO24-7

SO24-8*

E24-1

24

Vcc

23

S

0

22

S

1

21

Y

0

20

Y1

19

Y2

18

Y

3

&

17

Y

4

16

Y5

15

Y

6

14

Y

7

13

OE

2619 drw 02

DIP/SOIC/SSOP/QSOP/CERPACK

*FCT520 only

TOP VIEW

DEFINITION OF FUNCTIONAL TERMS

Pin Names Description

n Register input Port.

D
CLK Clock input. Enter data into registers on LOW-

to-HIGH transitions.

I

0, I1 Instruction inputs. See Figure 1 and in-

struction Control Tables.

0, S1 Multiplexer select. Inputs either register A1, A2,

S

B

1 or B2 data to be available at the output port.

OE

n Register output port.

Y

Output enable for 3-state output port.

INDEX

D

1

D

2

D

3

NC

D

4

D

5

D

6

5
6
7
8
9
10
11

12 13 14 15 16 17 18

0

1

I

D0I

432128 27 26

L28-1

7

D

CLK

GND

LCC

TOP VIEW

REGISTER SELECTION

S1 S0 Register

00B
01B1
10A2
11A1

NC

NC

Vcc

OE

0S1

S

25

0

Y

24

Y

1

23

Y

2

NC

22
21

Y

3

20

Y

4

19

Y

5

6Y7

Y

2619 drw 03

2

2619 tbl 02

IDT29FCT520T

IDT29FCT521T

NOTE:

1. I = 3 for hold.

2619 tbl 01

DUAL 2-LEVEL SINGLE 4-LEVEL

A1

A2

B1

B2

A1

A2

I = 2 I = 1

A

1

A2

B1

B2

A1

A2

I = 2 I = 1

Figure 1. Data Loading in 2-Level Operation

B1

B2

B1

B2

A

A2

A

A2

1

B1

B2

I = 0

1

B1

B2

I = 0

2619 drw 04

6.2 2

IDT29FCT520AT/BT/CT/DT, 521AT/BT/CT/DT
MULTILEVEL PIPELINE REGISTERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

(1)

Symbol Rating Commercial Military Unit

(2)

VTERM

Terminal Voltage

–0.5 to +7.0 –0.5 to +7.0 V
with Respect to
GND

(3)

VTERM

TA Operating

Terminal Voltage
with Respect to
GND

–0.5 to

CC +0.5

V

–0.5 to

VCC +0.5

0 to +70 –55 to +125 °C

V

Temperature

TBIAS Temperature

–55 to +125 –65 to +135 °C
Under Bias

TSTG Storage

–55 to +125 –65 to +150 °C
Temperature

PT Power Dissipation 0.5 0.5 W
IOUT DC Output

–60 to +120 –60 to +120 mA
Current

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. No terminal voltage may exceed
V

CC by +0.5V unless otherwise noted.

2. Input and V

3. Outputs and I/O terminals only.

CC terminals only.

2619 lnk 03

CAPACITANCE (TA = +25°C, f = 1.0MHz)ABSOLUTE MAXIMUM RATINGS

Symbol Parameter

CIN Input

Capacitance

COUT Output

Capacitance

NOTE:

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

(1)

Conditions Typ. Max. Unit

VIN = 0V 6 10 pF

VOUT = 0V 8 12 pF

2619 lnk 04

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:
Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%

Symbol Parameter Test Conditions

IH Input HIGH Level Guaranteed Logic HIGH Level 2.0 — — V

V

IL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V

V

(4)

(4)

(4)

(4)

VCC = Max. VI = 2.7V — — ±1 µA
VCC = Max. VI = 0.5V — — ±1 µA
VCC = Max. VO = 2.7V — — ±1 µA

VCC = Max., VI = VCC (Max.) — — ±1 µA

(3)

, VO = GND –60 –120 –225 mA

IN = VIH or VIL IOH = –8mA COM’L.

V

IN = VIH or VIL IOL = 48mA COM’L.

V

IN = GND or VCC

IH Input HIGH Current

I

IL Input LOW Current

I

OZH High Impedance

I

OZL Output Current VO = 0.5V — — ±1

I

I Input HIGH Current

I

IK Clamp Diode Voltage VCC = Min., IN = –18mA — –0.7 –1.2 V

V

OS Short Circuit Current VCC = Max.

I

OH Output HIGH Voltage VCC = Min. IOH = –6mA MIL. 2.4 3.3 — V

V

OL Output LOW Voltage VCC = Min. IOL = 32mA MIL. — 0.3 0.5 V

V

H Input Hysteresis — — 200 — mV

V

CC Quiescent Power VCC = Max. — 0.01 1 mA

I

Supply Current V

(1)

OH = –12mA MIL. 2.0 3.0 —

I

OH = –15mA COM’L.

I

Min. Typ.

(2)

Max. Unit

NOTES: 2619 tbl 05

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

3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.

4. The test limit for this parameter is ±5µA at T

CC = 5.0V, +25°C ambient.

A = -55°C.

6.2 3