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Integrated Device Technology Electronic Components Datasheet

IDT74FCT16646T Datasheet

FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTERS

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Integrated Device Technology, Inc.
FAST CMOS 16-BIT BUS IDT54/74FCT16646T/AT/CT/ET
TRANSCEIVER/
IDT54/74FCT162646T/AT/CT/ET
REGISTERS (3-STATE)
FEATURES:
• Common 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 1µA (max.)
– ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
– Packages include 25 mil pitch SSOP, 19.6 mil pitch
TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack
– Extended commercial range of -40°C to +85°C
– VCC = 5V ±10%
• Features for FCT16646T/AT/CT/ET:
– High drive outputs (-32mA IOH, 64mA IOL)
– Power off disable outputs permit “live insertion”
– Typical VOLP (Output Ground Bounce) < 1.0V at
VCC = 5V, TA = 25°C
• Features for FCT162646T/AT/CT/ET:
– Balanced Output Drivers: ±24mA (commercial),
±16mA (military)
– Reduced system switching noise
– Typical VOLP (Output Ground Bounce) < 0.6V at
VCC = 5V,TA = 25°C
DESCRIPTION:
The IDT54/74FCT16646T/AT/CT/ET and IDT54/
74FCT162646T/AT/CT/ET 16-bit registered transceivers are
built using advanced dual metal CMOS technology. These
high-speed, low-power devices are organized as two inde-
pendent 8-bit bus transceivers with 3-state D-type registers.
The control circuitry is organized for multiplexed transmission
of data between A bus and B bus either directly or from the
internal storage registers. Each 8-bit transceiver/register fea-
tures direction control (xDIR), over-riding Output Enable con-
trol (xOE) and Select lines (xSAB and xSBA) to select either
real-time data or stored data. Separate clock inputs are
provided for A and B port registers. Data on the A or B data
bus, or both, can be stored in the internal registers by the
LOW-to-HIGH transitions at the appropriate clock pins. Flow-
through organization of signal pins simplifies layout. All inputs
are designed with hysteresis for improved noise margin.
The IDT54/74FCT16646T/AT/CT/ET are ideally suited for
driving high-capacitance loads and low-impedance
backplanes. The output buffers are designed with power off
disable capability to allow "live insertion" of boards when used
as backplane drivers.
The IDT54/74FCT162646T/AT/CT/ET have balanced
output drive 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 IDT54/74FCT162646T/AT/CT/ET are plug-in
replacements for the IDT54/74FCT16646T/AT/CT/ET and
54/74ABT16646 for on-board bus interface applications.
FUNCTIONAL BLOCK DIAGRAM
1OE
1DIR
1CLKBA
1SBA
1CLKAB
1SAB
1A1 A REG
D
C
B REG
D
C
2OE
2DIR
2CLKBA
2SBA
2CLKAB
2SAB
1B1 2A1
A REG
D
C
B REG
D
C
2B1
TO 7 OTHER CHANNELS
2540 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
5.13
TO 7 OTHER CHANNELS
2540 drw 02
AUGUST 1996
DSC-4231/9
1


Integrated Device Technology Electronic Components Datasheet

IDT74FCT16646T Datasheet

FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTERS

No Preview Available !

IDT54/74FCT16646T/AT/CT/ET, 162646T/AT/CT/ET
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
PIN CONFIGURATIONS
1DIR
1CLKAB
1SAB
GND
1A1
1A2
VCC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2SAB
2CLKAB
2DIR
1 56
2 55
3 54
4 53
5 52
6 51
7 50
8 49
9 48
10 47
11 46
12 45
13 44
14 SO56-1 43
SO56-2
15 SO56-3 42
16 41
17 40
18 39
19 38
20 37
21 36
22 35
23 34
24 33
25 32
26 31
27 30
28 29
SSOP/
TSSOP/TVSOP
TOP VIEW
1OE
1CLKBA
1SBA
GND
1B1
1B2
VCC
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCC
2B7
2B8
GND
2SBA
2CLKBA
2OE
1DIR
1CLKAB
1SAB
GND
1A1
1A2
VCC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2SAB
2CLKAB
2DIR
2540 drw 03
MILITARY AND COMMERCIAL TEMPERATURE RANGES
1 56
2 55
3 54
4 53
5 52
6 51
7 50
8 49
9 48
10 47
11 46
12 45
13 44
14 E56-1 43
15 42
16 41
17 40
18 39
19 38
20 37
21 36
22 35
23 34
24 33
25 32
26 31
27 30
28 29
CERPACK
TOP VIEW
1OE
1CLKBA
1SBA
GND
1B1
1B2
VCC
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCC
2B7
2B8
GND
2SBA
2CLKBA
2OE
2540 drw 04
5.13 2


Part Number IDT74FCT16646T
Description FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTERS
Maker IDT
Total Page 9 Pages
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