IDT54/74FCT16245T/AT/CT/ET
IDT54/74FCT162245T/AT/CT/ET
IDT54/74FCT166245T/AT/CT
FAST CMOS 16-BIT
BIDIRECTIONAL
TRANSCEIVERS
IDT54/74FCT162H245T/AT/CT/ET
Integrated Device Technology, Inc.
DESCRIPTION:
FEATURES:
The16-bittransceiversarebuiltusingadvanceddualmetal
CMOS technology. These high-speed, low-power transceiv-
ers are ideal for synchronous communication between two
busses (A and B). The Direction and Output Enable controls
operate these devices as either two independent 8-bit trans-
ceivers or one 16-bit transceiver. The direction control pin
(xDIR) controls the direction of data flow. The output enable
pin (xOE) overrides the direction control and disables both
ports. All inputs are designed with hysteresis for improved
noise margin.
The FCT16245T are ideally suited for driving high-capaci-
tance loads and low-impedance backplanes. The output buff-
ersaredesignedwithpoweroffdisablecapabilitytoallow"live
insertion" of boards when used as backplane drivers.
The FCT162245T 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
FCT162245T are plug-in replacements for the FCT16245T
and ABT16245 for on-board interface applications.
• 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
• Features for FCT16245T/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 FCT162245T/AT/CT/ET:
– Balanced Output Drivers: ±24mA (commercial),
±16mA (military)
– Reduced system switching noise
The FCT166245T are suited for very low noise, point-to-
point driving where there is a single receiver, or a light lumped
– Typical VOLP (Output Ground Bounce) < 0.6V at
VCC = 5V,TA = 25°C
FUNCTIONAL BLOCK DIAGRAM
1 DIR
2 DIR
2
2
2
2
2
OE
1OE
2
A
A
1
2
1A1
1B1
B
B
1
2
3
4
1A2
2
1B2
1A3
2
A
A
A
A
3
4
B
B
B
B
1B3
1A4
2
1B4
1A5
2
2
5
6
2
2
5
6
1B5
1A6
1B6
1A7
2
A
A
7
8
1B7
2
B
B
7
8
1A8
2
1B8
2
2545 drw 02
2545 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AUGUST 1996
1996 Integrated Device Technology, Inc.
5.3
DSC-2545/9
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