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74FCT16952CTPAG

P1-P3P4-P6P7-P7
1
IDT74FCT16925AT/CT/ET
FAST CMOS 16-BIT REGISTERED TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
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.)
• 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
• Available in SSOP and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
SEPTEMBER 2009INDUSTRIAL TEMPERATURE RANGE
DSC-5442/5
IDT74FCT16952AT/CT/ET
FAST CMOS
16-BIT REGISTERED
TRANSCEIVER
DESCRIPTION:
The FCT16952T 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 (xCEAB) 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. xOEAB performs the output enable function on the B port. Data
flow from the B port to A port is similar but requires using xCEBA, xCLKBA,
and xOEBA inputs. Full 16-bit operation is achieved by tying the control pins
of the independent transceivers together.
The FCT16952T is ideally suited for driving high-capacitance loads and
low-impedance backplanes. The output buffers are designed with power off
disable capability allowing "live insertion" of boards when used as backplane
drivers.
2OEAB
2CEBA
2CLKBA
2OEBA
2CEAB
2CLKAB
2A1
2
B1
TO SEVEN OTHER CHANNELS
D
C
D
C
CE
CE
1OEAB
1CEBA
1CLKBA
1OEBA
1CEAB
1CLKAB
1A1
1
B1
TO SEVEN OTHER CHANNELS
D
C
D
C
CE
CE
54
55
1
3
2
56
5
52
31
30
28
26
27
29
15
42
© 2009 Integrated Device Technology, Inc.
2
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT16925AT/CT/ET
FAST CMOS 16-BIT REGISTERED TRANSCEIVER
PIN CONFIGURATION
Symbol Description Max Unit
VTERM
(2)
Terminal Voltage with Respect to GND –0.5 to +7 V
VTERM
(3)
Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG Storage Temperature –65 to +150 ° C
I
OUT DC Output Current –60 to +120 mA
ABSOLUTE MAXIMUM RATINGS
(1)
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 FCT162XXX Output and I/O terminals.
3. Output and I/O terminals for FCT162XXX.
Symbol Parameter
(1)
Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 3.5 6 pF
C
OUT Output Capacitance VOUT = 0V 3.5 8 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
SSOP/ TSSOP
TOP VIEW
1
B
1
1
B
2
GND
1
B
3
1
B
4
V
CC
1
B
5
1
B
6
1
OEBA
1
B
7
1
B
8
2
B
1
2
B
2
GND
2
B
3
2
B
4
V
CC
2
B
5
GND
1
CLKBA
2
B
7
2
B
6
2
B
8
GND
2
CLKBA
2
OEBA
1
CLKAB
GND
1
A
1
1
A
2
V
CC
1
A
3
1
A
4
GND
1
A
5
1
A
6
1
A
7
1
A
8
GND
2
A
1
2
A
2
V
CC
2
A
3
2
A
5
2
A
4
2
A
7
GND
2
A
8
2
CLKAB
2
A
6
1
OEAB
1
CEAB
2
OEAB
2
CEAB
2
CEBA
1
CEBA
47
37
38
39
40
41
42
43
44
45
46
33
34
35
36
56
55
49
50
51
52
53
54
48
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
21
22
23
24
29
30
31
3225
26
27
28
FUNCTION TABLE
(1,3)
Inputs Outputs
xCEAB xCLKAB xOEAB xAx xBx
HX L XB
(2)
XL L XB
(2)
L ↑ LLL
L ↑ LHH
XX H XZ
NOTES:
1. A-to-B data flow is shown: B-to-A data flow is similar but uses xCEBA, xCLKBA, and
xOEBA.
2. Level of B before the indicated steady-state input conditions were established.
3. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
↑ = LOW-to-HIGH Transition
Z = High-impedance
PIN DESCRIPTION
Pin Names Description
xOEAB A-to-B Output Enable Input (Active LOW)
xOEBA B-to-A Output Enable Input (Active LOW)
xCEAB A-to-B Clock Enable Input (Active LOW)
xCEBA B-to-A Clock Enable Input (Active LOW)
xCLKAB A-to-B Clock Input
xCLKBA B-to-A Clock Input
x A x A-to-B Data Inputs or B-to-A 3-State Outputs
x B x B-to-A Data Inputs or A-to-B 3-State Outputs
3
IDT74FCT16925AT/CT/ET
FAST CMOS 16-BIT REGISTERED TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
VIH Input HIGH Level Guaranteed Logic HIGH Level 2 — — V
VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V
IIH Input HIGH Current (Input pins)
(5)
VCC = Max. VI = VCC ——±1µA
Input HIGH Current (I/O pins)
(5)
——±1
IIL Input LOW Current (Input pins)
(5)
VI = GND — — ±1
Input LOW Current (I/O pins)
(5)
——±1
IOZH High Impedance Output Current VCC = Max. VO = 2.7V — — ±1 µA
IOZL (3-State Output pins)
(5)
VO = 0.5V — — ±1
VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1.2 V
IOS Short Circuit Current VCC = Max., VO = GND
(3)
–80 –140 –250 mA
VH Input Hysteresis — — 100 — mV
I
CCL Quiescent Power Supply Current VCC = Max. — 5 500 µ A
ICCH VIN = GND or VCC
ICCZ
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±10%
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Duration of the condition can not exceed one second.
5. The test limit for this parameter is ±5μA at TA = -55°C.
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
IO Output Drive Current VCC = Max., VO = 2.5V
(3)
–50 — –180 mA
VOH Output HIGH Voltage VCC = Min. IOH = –3mA 2.5 3.5 —
VIN = VIH or VIL IOH = –15mA 2.4 3.5 — V
IOH = –32mA
(4)
23—
VOH Output LOW Voltage VCC = Min. IOL = 64mA — 0.2 0.55 V
VIN = VIH or VIL
IOFF Input/Output Power Off Leakage
(5)
VCC = 0V, VIN or VO ≤ 4.5V — — ±1 μA
OUTPUT DRIVE CHARACTERISTICS
P1-P3P4-P6P7-P7

74FCT16952CTPAG

Mfr. #:
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Manufacturer:
IDT
Description:
Bus Transceivers 16-Bit Registered Transceiver
Lifecycle:
New from this manufacturer.
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