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Part: IDT74FCT16H245CTPVB
Category:
Interface and Interconnect
-> Transceivers
Description: Fast CMOS 16-bit Bidirectional Transceivers
Company: Integrated Device Technology, Inc.
Datasheet: Download IDT74FCT16H245CTPVB datasheet File size : 843 kB
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Datasheet text preview:
Integrated Device Technology, Inc.
FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT54/74FCT16245T/AT/CT/ET IDT54/74FCT162245T/AT/CT/ET IDT54/74FCT166245T/AT/CT IDT54/74FCT162H245T/AT/CT/ET
FEATURES:
· Common features: 0.5 MICRON CMOS Technology High-speed, low-power CMOS replacement for ABT functions Typical tSK(o) (Output Skew) 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 Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V,TA = 25°C
DESCRIPTION:
The 16-bit transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power transceivers 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 transceivers 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-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 FCT162245T have balanced output drive with current limiting resistors. This offers low ground bounce, minimal undershoot, and controlled output fall times reducing the n e e d for external series terminating resistors. The FCT162245T are plug-in replacements for the FCT16245T and ABT16245 for on-board interface applications. The FCT166245T are suited for very low noise, point-topoint driving where there is a single receiver, or a light lumped
FUNCTIONAL BLOCK DIAGRAM
1
DIR
1OE 1A1 1B1 1A2 1B2 1A3 1B3 1A4 1B4 1A5 1B5 1A6 1B6 1A7 1B7 1A8 1B8
2545 drw 01
2
DIR
2OE 2A1 2B1 2A2 2B2 2A3 2B3 2A4 2B4 2A5 2B5 2A6 2B6 2A7 2B7 2A8 2B8
2545 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
AUGUST 1996
DSC-2545/9
5.3
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IDT54/74FCT16245T/AT/CT/ET, 162245T/AT/CT/ET, IDT54/74FCT166245T/AT/CT, IDT54/74FCT162H245T/AT/CT/ET FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES
FEATURES: (Cont'd.)
· Features for FCT166245T/AT/CT: Light Drive A Port: ±8mA (commercial), ±6mA (military) High Drive B Port: +64mA, 32mA (commercial), +48mA, 24mA (military) Minimal system switching noise Typical VOLP (Output Ground Bounce) < 0.25V at VCC = 5V,TA = 25°C (A Port Switching) · Features for FCT162H245T/AT/CT/ET: Bus Hold retains last active bus state during 3-state Eliminates the need for external pull up resistors
DESCRIPTION: (Cont'd.)
load (<100pF). The buffers are designed to limit the output current to levels which will avoid noise and ringing on the signal lines without using external series terminating resistors. These parts have a ±8mA driver on the "A" Port and a +64/32mA driver on the "B" Port, making them ideal for interfacing noisy system busses to noise sensitive interfaces. The FCT162H245T have "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.
PIN CONFIGURATIONS
1DIR 1B1 1B2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 SO48-1 37 SO48-2 SO48-3 36 35 34 33 32 31 30 29 28 27 26 25
1OE 1A1 1A2
1DIR 1B1 1B2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 E48-1
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
2545 drw 04
1OE 1A1 1A2
GND
1B3 1B4
GND
1A3 1A4
GND
1B3 1B4
GND
1A3 1A4
VCC
1B5 1B6
VCC
1A5 1A6
VCC
1B5 1B6
VCC
1A5 1A6
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
GND
2B3 2B4
GND
2A3 2A4
GND
2B3 2B4
GND
2A3 2A4
VCC
2B5 2B6
VCC
2A5 2A6
VCC
2B5 2B6
VCC
2A5 2A6
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
2545 drw 03
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
SSOP/ TSSOP/TVSOP TOP VIEW
CERPACK TOP VIEW
5.3
2
IDT54/74FCT16245T/AT/CT/ET, 162245T/AT/CT/ET, IDT54/74FCT166245T/AT/CT, IDT54/74FCT162H245T/AT/CT/ET FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names xOE xDIR xAx xBx Description Output Enable Input (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs(1,2) Side B Inputs or 3-State Outputs(1,3)
2545 tbl 01
FUNCTION TABLE(1)
Inputs xOE L L H xDIR L H X Outputs Bus B Data to Bus A Bus A Data to Bus B High Z State
2545 tbl 02
NOTES: 1. On FCT162H245T these pins have "Bus Hold". All other pins are standard inputs, outputs or I/Os. 2. On FCT166245T this is the ±8mA Port. 3. On FCT166245T this is the +64/32mA Port.
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max. VTERM(2) Terminal Voltage with Respect to 0.5 to +7.0 GND VTERM(3) Terminal Voltage with Respect to 0.5 to GND VCC +0.5 TSTG Storage Temperature 65 to +150 I OUT DC Output Current 60 to +120 Unit V V °C mA
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol Parameter(1) CIN Input Capacitance CI/O I/O Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 3.5 Max. Unit 6.0 pF 8.0 pF
2545 lnk 04
NOTE: 1. This parameter is measured at characterization but not tested.
2545 lnk 03 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. 2. All device terminals except FCT162XXXT and FCT166XXXT (A-Port) Output and I/O terminals. 3. Output and I/O terminals for FCT162XXXT and FCT166XXXT (A-Port).
5.3
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