FAST CMOS
OCTAL REGISTERED
TRANSCEIVERS
Integrated Device Technology, Inc.
IDT29FCT52AT/BT/CT/DT
IDT29FCT2052AT/BT/CT
IDT29FCT53AT/BT/CT
FEATURES:
• Common features:
– Low input and output leakage
≤1µA
(max.)
– CMOS power levels
– True TTL input and output compatibility
– V
OH
= 3.3V (typ.)
– V
OL
= 0.3V (typ.)
– 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
• Features for 29FCT52/29FCT53T:
– A, B, C and D speed grades
– High drive outputs (-15mA I
OH
, 64mA I
OL
)
– Power off disable outputs permit “live insertion”
• Features for 29FCT2052T:
– A, B and C speed grades
– Resistor outputs (-15mA I
OH
, 12mA I
OL
Com.)
(-12mA I
OH
, 12mA I
OL
Mil.)
– Reduced system switching noise
DESCRIPTION:
The IDT29FCT52AT/BT/CT/DT and IDT29FCT53AT/BT/
CT are 8-bit registered transceivers built using an advanced
dual metal CMOS technology. Two 8-bit back-to-back regis-
ters store data flowing in both directions between two bidirec-
tional buses. Separate clock, clock enable and 3-state output
enable signals are provided for each register. Both A outputs
and B outputs are guaranteed to sink 64mA.
The IDT29FCT52AT/BT/CT/DT and IDT29FCT2052AT/BT/
CT are non-inverting options of the IDT29FCT53AT/BT/CT.
The IDT29FCT2052AT/BT/CT has balanced drive outputs
with current limiting resistors. This offers low ground bounce,
minimal undershoot and controlled output fall times-reducing
the need for external series terminating resistors. The
IDT29FCT2052T part is a plug-in replacement for
IDT29FCT52T part.
FUNCTIONAL BLOCK DIAGRAM
(1)
CPA
CEA
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
D
0
CE CP Q
0
D
1
D
2
Q
1
Q
2
OEB
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
D
3
Q
3
A
D
4
Reg. Q
4
D
5
D
6
D
7
Q
5
Q
6
Q
7
Q
0
Q
1
Q
2
D
0
D
1
D
2
Q
3
D
3
B
Q
4
Reg. D
4
Q
5
Q
6
OEA
D
5
D
6
Q
7
CE CP D
7
NOTE:
1. IDT29FCT52T/IDT29FCT2052T function is shown. IDT29FCT53T is
the inverting option.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
CPB
CEB
2629 drw 01
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1995
Integrated Device Technology, Inc.
JUNE 1995
DSC-4224/5
6.1
1
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
