TMS416400, TMS416400P, TMS417400, TMS417400P

TMS426400, TMS426400P, TMS427400, TMS427400P

4194304-WORD BY 4-BIT HIGH-SPEED DRAMS

SMKS881B – MAY 1995 – REVISED AUGUST 1995

8

POST OFFICE BOX 1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

TMS416400 / P

PARAMETER

TEST CONDITIONS†

’416400 - 60

’416400P - 60

’416400 - 70

’416400P - 70

’416400 - 80

’416400P - 80

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

VOH

High-level output

voltage

IOH = – 5 mA

2.4

2.4

2.4

V

VOL

Low-level output

voltage

IOL = 4.2 mA

0.4

0.4

0.4

V

II

Input current

(leakage)

VCC = 5.5 V,

VI = 0 V to 6.5 V,

All others = 0 V to VCC

± 10

± 10

± 10

µA

IO

Output current

(leakage)

VCC = 5.5 V,

VO = 0 V to VCC,

CAS high

± 10

± 10

± 10

µA

ICC1‡§

Read- or write-cycle

current

VCC = 5.5 V,

Minimum cycle

80

70

60

mA

I

Standby current

VIH = 2.4 V ( TTL),

After 1 memory cycle,

RAS and CAS high

2

2

2

mA

ICC2

Standby current

VIH = VCC – 0.2 V (CMOS),

After 1 memory cycle

’416400

1

1

1

mA

After 1 memory cycle,

RAS and CAS high

’416400P

500

500

500

µA

ICC3‡§

Average refresh

current (RAS-only

refresh or CBR)

VCC = 5.5 V,

Minimum cycle,

RAS cycling,

CAS high (RAS only),

RAS low after CAS low (CBR)

80

70

60

mA

ICC4ঠAverage page current

VCC = 5.5 V,

tPC = MIN,

RAS low,

CAS cycling

70

60

50

mA

ICC6#

Self-refresh current

CAS < 0.2 V,

RAS < 0.2 V,

Measured after tRASS min

500

500

500

µA

ICC10#

Battery back-up

operating current

(equivalent refresh

time is 128 ms); CBR

only

tRC = 31.25 µs,

tRAS ≤ 1 µs,

VCC – 0.2 V ≤ VIH ≤ 6.5 V,

0 V

≤ VIL ≤ 0.2 V, W and OE = VIH,

Address and data stable

500

500

500

µA

† For conditions shown as MIN / MAX, use the appropriate value specified in the timing requirements.

‡ Measured with outputs open

§ Measured with a maximum of one address change while RAS = VIL

¶ Measured with a maximum of one address change while CAS = VIH

# For TMS416400P only