Semiconductor integrated circuit device having input/output buff

Details Semiconductor integrated circuit device having input/output buff Semiconductor integrated circuit device having input/output buff

1989-01-06

1991-02-12

Mintel, William

357 40, 357 41, 357 45, H01L 2702

Patent

active

049928457

ABSTRACT:
An internal logic gate portion (3) is provided in the central portion of a semiconductor chip (1), input/output buffers (4) are provided to surround the internal logic gate portion (3), and bonding pads (2) are provided in the peripheral portions of the semiconductor chip (1) corresponding to input/output buffer cells (5) in the input/output buffer. Each of the input/output buffer cells (5) comprises an output P-MOS portion (6), an output N-MOS portion (7), an input/logic P-MOS portion (8) and an input/logic N-MOS portion (9), which are respectively arranged in a single line in the direction from the bonding pads (2) to the internal logic gate portion (3). In the above described structure, the size of each of the input/output buffer cells (5) in the pad arranging direction of the bonding pads (2) is decreased, so that the number of input/output pins can be increased according to the decreased use of space in the pad arranging direction required by each input/output buffer cell (5).

REFERENCES:
patent: 4591894 (1986-05-01), Kawakami
patent: 4651190 (1987-03-01), Suzuki et al.
patent: 4766475 (1988-08-01), Kawashima
patent: 4771327 (1988-09-01), Usui
Blumberg et al, "A 640K Transistor Sea-of-Gates 1.2.mu. Micron HCMOS Technology," 1988 IEEE International Solid-State Circuits Conference, Digest of Technical Papers, Feb. 17, 1988, pp. 74-75 & 308.

Affiliated with

Also associated with

Rating

Semiconductor integrated circuit device having input/output buff does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor integrated circuit device having input/output buff, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor integrated circuit device having input/output buff will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-24054