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IDT54/74FCT162H952AT/BT/CT/ET
FASTCMOS16-BITREGISTEREDTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
AUGUST 1999
1999
Integrated Device Technology, Inc.
DSC-5441/-
c
IDT54/74FCT162H952AT/BT/CT/ET
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FAST CMOS
16-BIT REGISTERED
TRANSCEIVER
DESCRIPTION:
The FCT162H952AT/BT/CT/ET 16-bit registered transceiver is built
using advanced dual metal CMOS technology. These high-speed, low-
power devices are organized as two independent 8-bit D-type registered
transceivers with separate input and output control for independent control
of data flow in either direction. For example, the A-to-B Enable (x
CEAB)
must be LOW to enter data from the A port. xCLKAB controls the clocking
function. When xCLKAB toggles from LOW-to-HIGH, the data present on the
A port will be clocked into the register. x
OEAB performs the output enable
function on the B port. Data flow from the B port to A port is similar but requires
using x
CEBA, xCLKBA, and xOEBA inputs. Full 16-bit operation is
achieved by tying the control pins of the independent transceivers together.
The FCT162H952AT/BT/CT/ET has "Bus Hold" which retains the
input's last state whenever the input goes to high impedance. This prevents
"floating" inputs and eliminates the need for pull-up/down resistors.
FUNCTIONAL BLOCK DIAGRAM
2
OEAB
2
CE BA
2
CLKBA
2
OEBA
2
CE AB
2
CLKAB
2
A1
2
B 1
TO SEVEN OTHER CHANNELS
D
C
D
C
CE
1
OEAB
1
CE BA
1
CLKBA
1
OEBA
1
CE AB
1
CLKAB
1
A 1
1
B 1
TO SEVEN OTHER CHANN ELS
D
C
D
C
CE
54
55
1
3
2
56
5
52
31
30
28
26
27
29
15
42
FEATURES:
0.5 MICRON CMOS Technology
High-speed, low-power CMOS replacement for ABT functions
Typical tSK(o) (Output Skew) < 250ps
Low input and output leakage ≤ 1A (max.)
ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
25 mil pitch SSOP, 19.6 mil pitch TSSOP, 15.7 mil pitch TVSOP
and 25 mil pitch CERPACK packages
Extended commercial range of -40°C to +85°C
Bus Hold retains last active bus state during 3-state
Eliminates the need for external pull up resistors