TMS27C010A 131 072 BY 8BIT UV ERASABLE

TMS27PC010A 131 072 BY 8BIT

PROGRAMMABLE READONLY MEMORIES

SMLS110C − NOVEMBER 1990 − REVISED SEPTEMBER 1997

9

POST OFFICE BOX 1443

PARAMETER MEASUREMENT INFORMATION

2.08 V

RL = 800 Ω

Output

Under Test

CL = 100 pF

(see Note A)

2.4 V

0.4 V

2 V

0.8 V

2 V

0.8 V

NOTES: A. CL includes probe and fixture capacitance.

B. The ac testing inputs are driven at 2.4 V for logic high and 0.4 V for logic low. Timing

measurements are made at 2 V for logic high and 0.8 V for logic low for both inputs

and outputs.

Figure 2. The ac Test Output Load Circuit and Waveform

A0 − A16

E

G

DQ0 − DQ7

Address Valid

VIH

VIL

VIH

VIL

VIH

VIL

VIH

VIL

ta(A)

ta(E)

ten(G)

tdis

tv(A)

Hi-Z

Hi-Z

Output Valid

Figure 3. Read-Cycle Timing