CY74FCT163244_05 Datasheet, PDF (1/10 Pages) Texas Instruments – 16-Bit Buffers/Line Drivers

Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT163244
CY74FCT163H244
SCCS046 - December 1996 - Revised March 2000
16-Bit Buffers/Line Drivers
Features
• Low power, pin-compatible replacement for LCX and
LPT families
• 5V tolerant inputs and outputs
• 24 mA balanced drive outputs
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for reduced noise
• FCT-C speed at 4.1 ns
• Latch-up performance exceeds JEDEC standard no. 17
• Typical output skew < 250 ps
• Industrial temperature range of –40˚C to +85˚C
• TSSOP (19.6-mil pitch) or SSOP (25-mil pitch)
• Typical V_olp (ground bounce) performance exceeds Mil
Std 883D
• V_CC = 2.7V to 3.6V
• ESD (HBM) > 2000V
CY74FCT163H244
• Bus hold on data inputs
• Eliminates the need for external pull-up or pull-down
resistors
• Devices with bus hold are not recommended for trans-
lating rail-to-rail CMOS signals to 3.3V logic levels
Functional Description
These 16-bit buffers/line drivers are designed for use in
memory driver, clock driver, or other bus interface applications,
where high-speed and low power are required. The three-state
controls are designed to allow 4-bit, 8-bit or combined 16-bit
operation. Flow-through pinout and small shrink packaging
simplifies board layout.
The CY74FCT163244 has 24-mA balanced output drivers
with current limiting resistors in the outputs.
The CY74FCT163H244 has “bus hold” on the data inputs,
which retains the last state of the input whenever the source
driving the input goes to high impedance. This eliminates the
need for pull-up/down resistors and prevents floating inputs.
Logic Block Diagrams CY74FCT163244, CY74FCT163H244
1^OE
1^A1
1^A2
1^A3
1^A4
3^OE
1^Y1
3^A1
1^Y2
3^A2
1^Y3
3^A3
1^Y4
3^A4
2^OE
2^A1
2^A2
2^A3
2^A4
4^OE
2^Y1
4^A1
2^Y2
4^A2
2^Y3
4^A3
2^Y4
4^A4
Pin Configuration
SSOP/TSSOP
Top View
1^{OE 1}
48 ₂OE
3^Y1
1^Y1 2
47 1A1
1^Y2 3
46 1A2
GND 4
45 GND
3^Y2
1^Y3 5
44 1A3
163244
1^Y4 6 163H244 43 1^A4
3^Y3
V_{CC 7}
42 ^VCC
2^Y1 ₈
41 2^A1
2^Y2 9
40 ^2A2
3^Y4
GND ₁₀
39 ^GND
2^Y3 11
38 2^A3
2^Y4 12
37 2A4
3^Y1 ¹³
36 ₃A₁
3^Y2 ¹⁴
GND ¹⁵
35 ₃A₂
34 _GND
4^Y1
3^Y3 ¹⁶
3^Y4 ¹⁷
33 ₃A₃
32 _3A4
V_CC 18
31 V_CC
4^Y2
4^Y1 19
30 4A1
4^Y2 20
29 4A2
GND 21
28 GND
4^Y3
4^Y3 22
27 4A3
4^Y4 ²³
26 ₄A₄
4^Y4
4^OE 24
25 3^OE
Copyright © 2000, Texas Instruments Incorporated