CY74FCT16827T Datasheet, PDF (1/7 Pages) Texas Instruments – 20-Bit Buffers/Line Drivers

1CY74FCT162827T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16827T
CY74FCT162827T
SCCS064 - August 1994 - Revised March 2000
20-Bit Buffers/Line Drivers
Features
• FCT-E speed at 3.2 ns
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
• Industrial temperature range of −40˚C to +85˚C
• V_CC = 5V ± 10%
CY74FCT16827T Features:
• 64 mA sink current, 32 mA source current
• Typical V_OLP (ground bounce) <1.0V at V_CC = 5V,
T_A = 25˚C
CY74FCT162827T Features:
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical V_OLP (ground bounce) <0.6V at V_CC = 5V,
T_A= 25˚C
Functional Description
The CY74FCT16827T 20-bit buffer/line driver and the
CY74FCT162827T 20-bit buffer/line driver provide
high-performance bus interface buffering for wide data/address
paths or buses carrying parity. These parts can be used as a single
20-bit buffer or two 10-bit buffers. Each 10-bit buffer has a pair of
NANDed OE for increased flexibility. The outputs are designed with
a power-off disable feature to allow for live insertion of boards.
The CY74FCT16827T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162827T has 24-mA balanced output drivers
with current-limiting resistors in the outputs. This reduces the
need for external terminating resistors and provides for
minimal undershoot and reduced ground bounce. The
CY74FCT162827T is ideal for driving transmission lines.
Logic Block Diagrams
1^OE1
1^OE2
1^A1
1^Y1
2^OE1
2^OE2
TO 9 OTHER CHANNELS
FCT16827-1
2^A1
2^Y1
TO 9 OTHER CHANNELS
FCT16827-2
Pin Configuration
SSOP/TSSOP
Top View
1^OE1 1
1^Y1 2
1^Y2 3
GND ₄
1^Y3 5
1^Y4 6
V_{CC 7}
1^Y5 ₈
1^Y6 ₉
1^Y7 ₁₀
GND ₁₁
1^Y8 ₁₂
1^Y9 13
1^Y10 14
2^Y1 ¹⁵
2^Y2 ¹⁶
2^Y3 ¹⁷
GND 18
2^Y4 19
2^Y5 20
2^Y6 21
V_{CC 22}
2^Y7 23
2^Y8 24
GND 25
2^Y9 26
2^Y10 27
2^OE1 28
56
1^OE2
55 1A1
54 1^A2
53 GND
52 1A3
51 1A4
50 ^VCC
49
1^A5
48
1^A6
47
1^A7
46 GND
45
1^A8
44
1^A9
43
1^A10
42
2^A1
41
2^A2
40
2^A3
39 ^GND
38
2^A4
37
2^A5
36
2^A6
35
V_CC
34
2^A7
33
2^A8
32 GND
31
2^A9
30
2^A10
29
2^OE2
FCT16827-3
Copyright © 2000, Texas Instruments Incorporated