Document
FAST CMOS 16-BIT REGISTER (3-STATE)
Integrated Device Technology, Inc.
IDT54/74FCT16374T/AT/CT/ET IDT54/74FCT162374T/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) < 250ps – Low input and output leakage ≤1µ A (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 FCT16374T/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 FCT162374T/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 FCT16374T/AT/CT/ET and FCT162374T/AT/CT/ET 16-bit edge-triggered D-type registers are built using advanced dual metal CMOS technology. These high-speed, low-power registers are ideal for use as buffer registers for data synchronization and storage. The Output Enable (xOE) and clock (xCLK) controls are organized to operate each device as two 8-bit registers or one 16-bit register with common clock. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin. The FCT16374T/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 FCT162374T/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 FCT162374T/AT/CT/ET are plug-in replacements for the FCT16374T/AT/CT/ET and ABT16374 for on-board bus interface applications.
FUNCTIONAL BLOCK DIAGRAM
1OE 1CLK 1D1
2OE
2CLK
D
1O1
2D1
D
2O1
C
C
TO 7 OTHER CHANNELS
2542 drw 01
TO 7 OTHER CHANNELS
2542 drw 01
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-4230/9
5.8 1
IDT54/74FCT16374T/AT/CT/ET, 162374T/AT/CT/ET FAST CMOS 16-BIT REGISTER (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
1OE 1 O1 1 O2
1 2 3 4 5 6 7 8 9 10 11 12 SO48-1 SO48-2 13 SO48-3 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1CLK 1 D1 1 D2
1OE 1O1 1O2
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
2542 drw 04
1CLK 1 D1 1 D2
GND
1 O3 1 O4
GND
1 D3 1 D4
GND
1O3 1O4
GND
1 D3 1 D4
VCC
1 O5 1 O6
VCC
1 D5 1 D6
VCC
1O5 1O6
VCC
1 D5 1 D6
GND
1 O7 1 O8 2 O1 2 O2
GND
1 D7 1 D8 2 D1 2 D2
GND
1O7 1O8 2O1 2O2
GND
1 D7 1 D8 2 D1 2 D2
GND
2 O3 2 O4
GND
2 D3 2 D4
GND
2O3 2O4
GND
2 D3 2 D4
VCC
2 O5 2 O6
VCC
2 D5 2 D6
VCC
2O5 2O6
VCC
2 D5 2 D6
GND
2 O7 2 O8 2OE
GND
2 D7 2 D8 2CLK
2542 drw 03
GND
2O7 2O8 2OE
GND
2 D7 2 D8 2CLK
SSOP/ TSSOP/TVSOP TOP VIEW
CERPACK TOP VIEW
5.8
2
IDT54/74FCT16374T/AT/CT/ET, 162374T/AT/CT/ET FAST CMOS 16-BIT REGISTER (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names xDx xCLK xOx xOE Description Data Inputs Clock Inputs 3-State Outputs. 3-State Output Enable Input (Active LOW)
2542 tbl 01
FUNCTION TABLE(1)
Inputs Function Hi-Z Load Register xDx X X L H L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High Impedance ↑ = LOW-to-HIGH Transition
Outputs xOE H H L L H H xOx Z Z L H Z Z
2542 tbl 02
xCLK L H
↑ ↑ ↑ ↑
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max. VTERM(2) Terminal Voltage with Respect to –0.5 to +7.0 GND –0.5 to VTERM(3) Terminal Voltage with Respect to GND VCC +0.5 TSTG Storage Temperature –65 to +150 I OUT DC Output Current –60 to +120 Unit V V
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
2542 lnk 04
°C
mA
NOTE: 1. This parameter is measured at characterization but not tested.
2542 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 Output and I/O terminals. 3. Output and.